instruction:
In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.
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Article: Water is of vital importance in a healthy diet and lifestyle. There are many health benefits of drinking water .It helps get _ out of our systems. It aids in the delivery of oxygen and nutrients .In fact, nearly every system in our bodies depends on water for proper functioning .But how can we tell whether the water we're drinking is healthy? As to tap water, it's relatively easy .If your water comes from a governmental source , the suppliers are required by law to provide annual water quality reports .If you have a well, you can have an authorized lab test your water .It may cost $100 or more, but it's a small price to pay for peace of mind . When it comes to bottled drinking water, it can be more difficult to know what you're getting .Start by checking the label or the bottle cap. Some may tell you that the water comes from a governmental source or "community water system", which means tap water .If the label doesn't give any information, you can call the bottler and ask .But don't be surprised if you get the runaround and are transferred to several different departments .Some states have a bottled water program that tracks bottled drinking water and can tell you the origin of the water as well as other information . Safe and healthy drinking water has become big business .Thousands of companies are competing for your hard earned cash , and some are not always honest about what their products offer .The initial investment in a home drinking water filtration system can seem expensive at first , but over time , it is usually less expensive than bottled drinking water .And with a water filter , you at least know where the water you drink comes from and how it is treated . Before going out and spending your hard earned money on bottled drinking water , it's a good idea to do some research .You're likely to find that a drinking water filtration system or purifier is a healthier choice and provides the best value as well .
Question: By using a water filter, people _
Options: (A) can drink water without fearing that the water isn't treated (B) will have to pay more money eventually than if they just drink bottled water (C) will know if the water company is honest or not (D) can check the quality of the water by themselves.
answer:
A

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Article: New findings show that musical training affects the structure and function of different brain areas, how those areas communicate during the creation of music, and how the brain interprets and combines sensory information. The findings were presented at Neuroscience 2013, the annual meeting of the Society for Neuroscience and the world's largest source of emerging news about brain science and health. These views suggest potential new roles for musical training including training plasticity in the brain, offering an alternative tool in education, and treating a range of learning disabilities. Today's new findings show that long-term high level musical training has a broader effect. Researchers found that musicians have a better ability to combine sensory information from hearing, touch, and sight. The age at which musical training begins influenced brain structure and its function. Beginning training before the age of seven has the greatest effect. Even older adults who took music lessons as children but haven't actively played an instrument in decades have a faster brain response to a speech sound than those who never played an instrument, according to a study appearing November 6 in the Journal of Neuroscience. The finding suggests early musical training has a lasting, positive effect on how the brain deals with sound. "Playing a musical instrument is a multi-sensory and motive experience that creates emotions and movements--from finger tapping to dancing -- and engages pleasure and reward systems in the brain. It has the potential to affect brain function and structure when done over a long period of time," said Gottfried Schlaug, MD, PhD, of Harvard Medical School, press conference speaker, also an expert on music. "As today's findings show, musical training brings about new processes within the brain, at different stages of life, and with a range of effects on creativity, cognition , and learning," he added.
Question: Why does the author mention "Even older adults ... a speech sound." in Para. 3?
Options: (A) To suggest how new roles for musical training work. (B) To prove early musical training affects the function of the brain. (C) To explain how the brain interprets sensory information. (D) To show how the brain areas communicate in music training.
answer:
B

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Article: I recall a moment that I experienced with my dad when I was twenty-one. I was going to college and living with a couple of friends in Chicago. When the car I was using died, my dad, realizing that I needed transportation to get to work and to school, was good enough to lend me the money for a used car. Shortly after I bought it, my parents drove down to San Diego for the winter. Before they left, my dad gave me some of his bank deposit slips with clear and detailed instructions to put one hundred dollars of my earnings, every payday, into their savings account while they were gone. At that time of my life, I was not yet clear about what were the most important problems that I had to attend to first. I dismissed our agreement as nothing important and continued to spend my money as fast as I was making it, in pubs, on dates, and so on. Instead of honoring our agreement, I made payments that were less than the agreed-upon amounts, and on more than one occasion I made no payment at all. When my parents arrived home in late March, I got a call from my dad, who said, "Don't go anywhere. I'm coming over." My dad was (and still is) a physical presence and had been a truck driver for thirty-five years. I felt ashamed and guilty, knowing that Dad had discovered that I hadn't held up my end of our bargain. After he came in, he told me to sit down because he had a few things to tell me. There was no shouting, no red face with a vein about to burst on his forehead, and no bad language at all. His first words were, "When your mother and I got back into town yesterday, I called the bank. I can't say I was surprised to discover that you hadn't made all the payments. My first thought was to come here and take the car from you, but I want to tell you some things while I'm here. Maybe you'll understand, and maybe you won't." He went on to tell me, very calmly, about what it means to keep your word. He explained that when he was growing up after the Depression, a man's handshake and his word meant everything. He also told me that because I was twenty-one, he didn't feel angry so much as sad and disappointed. He closed by saying that our words and actions have a real effect on others, and that my words and actions were what others would measure me by. He added that if I hadn't yet formed some core or basic values and principles, this might be a good time to start thinking about those things. For the first time, I saw real disappointment on Dad's face. He gave me a second chance to make our deal right, and even gave me more deposit slips, saying, "I will take those keys if you miss a single payment or, at the very least, if you don't let me know in advance that you'll have trouble making a payment. _ ." He spoke for about forty-five minutes, and I listened. He didn't expect me to say much, and I knew enough to keep quiet. I just nodded or shook my head at the right time and continued to listen. That time we spent together changed me forever. Then and there, I made a promise to myself that I'd never again be the cause of that look of sadness and disappointment on Dad's face. After that defining afternoon, our relationship got better and better. I'm now married with two sons of my own, and they're already learning about the importance of honor, trust, and honesty.
Question: The writer bought a second-hand car because _ .
Options: (A) he was going to college (B) he was living with some friends (C) he was working while studying (D) his parents wanted to go to San Diego
answer:
C