Detailed Instructions: 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.
See one example below:
Problem: Article: Homework can put you in a bad mood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay.
Question: Researchers did experiments on kids in order to find out _ .
Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
Solution: B
Explanation: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. So, B is the correct answer.

Problem: Article: Believe it or not, there're always some people who like staying up too late. However, sleeping early can bring us many benefits. 1. Healthy heart. Staying up late in the night is a way to hurt your body with high blood pressure and cholesterol . These are the risks associated with the heart. 2. Reduce stress. A peaceful sleep in the night relieves physical and mental stress. It relaxes the body and mind. With insufficient sleep you're risking your health with heart attacks and other diseases. 3. Improve memory. Sleeping early lets your mind arrange the thoughts well. Waking up early with a fresh mind will regain all of it. 4. Protect you from diseases. By sleeping late in the night you're only stressing yourself, which will increase the blood pressure and cholesterol levels. So sleep early and let your body keep the pressure levels constant. 5. _ . Breakfast is very important to start the day. Most of the time as we wake up late we miss it. 6. Positive performance. Sleeping continuously for at least 7 hours in the night is necessary. Inadequate sleep will limit your ability to think creatively, handle stress and concentrate. 7. Help metabolism . Our body needs to send away all the unwanted waste. Sleeping through the day till noon will disorganise the exile . We need to eat and sleep on time to keep energy. 8. Reduce the risk of cancer. Sleep in the dark. Light in the night reduces the melatonin level which's supposed to cause sleep and prevent the risk of cancer. 9. Increase energy. Sleeping early will let you complete your 7 hours of sleep and make you fresh the next morning. It gives you the energy to perform better. 10. Keep weight. When you sleep too late your organism is disturbed. Sleeping for less than 7 hours a day is an invitation to being overweight.
Question: What kind of sleep can relieve the physical and mental stress?
Options: (A) A peaceful sleep. (B) An insufficient sleep. (C) A continuous sleep. (D) An inadequate sleep.
Solution:
A