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.
One example: 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 is here: 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.

Now, solve this: Article: Schools have been blamed for giving kids access to soda in vending machines . But new data suggest that school soft drink sales may not be an important factor in how much soda kids drink. In the current issue of The Journal of Nutrition Education and Behavior, researchers compared soda consumption among nearly 500 students inprefix = st1 /Mainewho attended seven schools over two school years. Four of the schools cut back on soft drink availability at the schools, while three of the schools made no changes. All the students were drinking less soda by the end of the study period, but there were no meaningful differences in overall soft drink consumption among the different schools. The data suggest that limiting soft drink availability at school doesn't result in meaningful changes in drink consumption patterns. While there were no changes in overall soda consumption, there was a notable shift in diet soda drinking among girls. If the school cut back on soda availability, girls were less likely to drink diet soda, compared to girls in schools that made no changes. The data are the latest to suggest that schools may not play as big of a role in kids' poor eating habits as widely believed. Last year, The American Journal of Public Healthpublished a provocative study showing that childhood weight problems often get worse in the summer, when kids are out of school. Data from kindergarteners and first graders found that body mass index increased two to three times as fast in summer as during the regular school year. Minority children were especially at risk, as were children who were already overweight. Even children who were too thin and needed to gain weight appeared to have better eating habits during the school year. They actually gained more weight while in school and less in the summer. Even so, much of the focus on childhood nutrition and obesity remains in the nation's schools. Today, The Timesreported that even the school bake sale is disappearing as districts impose strict standards on the food served on school grounds.
Question: What can be learned from The Journal of Nutrition Education and Behavior?
Options: (A) Soft drink remains a problem in schools. (B) Girls tend to consume less soda at school. (C) Soft drinks may not to be blame for eating problems. (D) Vending machines are not available in all schools.
Solution:
C