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.
--------
Question: Article: Many people cannot start their day without first having a cup of coffee or tea.These drinks help them think clearly and feel more awake.This is because of caffeine,which helps to give a jump start to the nervous system.Now,a report says it may also boost long-term memory. Mike Yassa is a neurobiology professor.He and other researchers wanted to know if caffeine could improve a person's memory.He explains,"After you learn anything,it takes some time for that memory to strengthen.And over the first 24 hours is actually where most of the forgetting happens.So that is where we wanted to intervene with caffeine and see if we can help reduce this forgetting." They took 160 caffeine-free people and showed them pictures of everyday objects. These people were asked if the objects could be found inside the house, or outdoors.Then some of the subjects were given a caffeine pill.The others were given a placebo--a pill containing nothing. 24 hours later,the subjects were shown the exact same images from the day before.They were also shown images with slight differences,and some completely new images. Both groups correctly identified the exact same and completely new pictures.But those who took the caffeine pill were better at spottingthe pictures that were slightly different. Professor Yassa says their answers helped to show the effects of caffeine on memory. And we find that if they are on caffeine they are much more likely to make the right decision." The amount of caffeine the researchers used in the study was similar to one cup of strong coffee.The researchers did not see any improvement to memory from smaller doses of caffeine or when it was given an hour before viewing the images.
Question: What is the focus of the text?
Options: (A) Caffeine can make people addicted. (B) Caffeine can make people energetic. (C) Caffeine can improve long--term memory. (D) Caffeine can make people feel comfortable.

Answer: C

Question: Article: By Road Around the World Nickname: Walker Email: ragwani@hotmail.com When to travel: May 2011-Aug 2011 Who am I: I am 55. From my childhood, have this dream to go around the world by hitch hiking. However this is now changed and I want to go by road. My travel plans: Going throughout the world and study various people, culture, habits. Who am I looking for: A female companion, and she must have similar interest as me. Just for fun Nickname: Stream Email: qrutta@yahoo.co.uk When to travel: Jan 2011-Dec 2011 Who am I: Young slim girl, looking to see Asia with anyone who wants to travel. My travel plans: I most prefer a white man in his late30's to have fun with me as he travels either on business or leisure trips Whom am I looking for: Someone who is honest, friendly; good sense of humor, adventurous. 22yr old Australian looking for travel companion Nickname: Angela Email: alyssia _ europe@hotmail.com When to travel: March 2011 Who am I: a lovely girl, with fun, honest, caring. My travel plans: I will be traveling to Europe cities, then the world! Who am I looking for: An extremely fun and entertaining male/female, middle-aged, someone that I can enjoy every travel moment with. Fun and maybe more Nickname: Sunnygirl Email: sunnygirl2008@yahoo.com When to travel: Jun2011-Aug2011 Who am I: Slender African girl in her late 20's. Quite charming, loving, pretty,fun to be with. My travel plans: Nothing in mind for sure, just looking to come with you. Whom am I looking for: Looking for a white male between 40-50 years, someone who is full of energy and lively.
Question: What way would Walker like to choose for his travel this time?
Options: (A) By plane. (B) By road. (C) By water. (D) By hitch hiking.

Answer: B

Question: Article: Many people turn to doctors or self-help books, but they forget a great thing that could help them fight illness: their friends. Researchers are only now starting to pay attention to the importance of friendship in health. A 10-year Australian study found that older people with a large circle of friends were 22 percent less likely to die during the study period than those with fewer friends. A large 2007 study showed an increase of nearly 60 percent in the danger for _ among people whose friends gained weight. And last year, Harvard researchers reported that strong social ties could improve brain health as we age. "In general, the role of friendship in our lives isn't well realized," said Rebecca, a professor at the University of North Carolina. "Friendship has a bigger effect on our psychological health than family relationships." While many friendship studies are about the close relationships of women, some research shows that it can do good to men too. In a six-year study of 736 middle-aged men, having friendships reduces the risk of heart attack. Only smoking was as important a danger factor as having little social support. The exact reason why friendship has such a big effect isn't clear. While friends can send a sick person to the hospital or pick up medicine, the advantages go well beyond physical help. Friendship clearly has a big psychological effect. "People with stronger friendships feel like there is someone they can turn to," said Karen, a doctor. "The message of these studies is that friends make your life better."
Question: The author mentioned smoking in the text to discuss _ .
Options: (A) the cause of heart attack (B) the danger of having no friends (C) smoking is bad for men (D) friends' influence on habits

Answer:
B