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: People want action on noise, a recent public meeting in Brisbane showed.Some want technical improvements such as quieter air conditioners or better sound barriers around major roads.Others want tougher laws to restrict noise from building sites or to require owners to take responsibility for barking dogs.But the highest priority was a noise complaints system that works. Brisbane City Council receives more complaints about noise than all other problems put together.So it conducted a survey and found that about half its residents are upset by noise in one form or another -traffic, mowers, pool pumps, air conditioners or loud parties.This inspired the Council to bring together more than 100 citizens one evening to talk through a range of options. The meeting found the present regulatory system bizarre.Depending on the problem, responsibility for noise can lie with the Council, the Environment Protection Authority, one of three government departments or even the police.So complainants often feel they are getting the run-round.When the people at the forum were asked to vote for changes, the strongest response was for a 24-hour noise hotline to be the first part of call for all complaints. The forum also favored regulatory measures, such as tougher minimum standards for noise in appliances like air conditioners.This even makes economic sense, as noise is a waste of energy and money.Other measures the meeting supported were wider buffer   zones around noisy activities and controls to keep heavy traffic away from residential areas. But there are obvious conflicts.Many people like to have a bar within walking distance if they feel like a drink, but they don't want a noisy pub keeping them awake when they want an early night.Most people want to live near a major road providing good access to other parts of the city, but they don't' want the problem of road noise. I was most interested by the proposals aimed at behavioral change.There was strong support for measures to reduce traffic: better public transport, cycle ways and footpaths, even charges for road use.Many people optimistically thought industry awards for better equipment would stimulate the production of quieter appliances.It was even suggested that noise from building sites could be alleviated   if Brisbane adopted daylight saving, thus shifting the working day and providing longer, quieter evenings. 
 Question: According to the recent public meeting in Brisbane, what was the first step to take in order to reduce noise pollution? 
 Options: (A) Produce quieter air conditioners. (B) Provide better sound barriers around major roads. (C) Establish a noise complaints system. (D) Make stricter laws to require owners to take responsibility for barking dogs.
Solution:
C