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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.

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
Why? 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.

New input: Article: "This past year has been one of great celebration for many. The enthusiasm which greeted the Diamond Jubilee was, of course, especially memorable for me and my family. It was humbling that so many chose to mark the anniversary of a duty which passed to me 60 years ago. People of all ages took the trouble to take part in various ways and in many nations. But perhaps most striking of all was to witness the strength of fellowship and friendship among those who had gathered together on these occasions. On the barges and the bridges and the banks of the river there were people who had taken their places to cheer through the mist, undaunted by the rain. That day there was a tremendous sense of common determination to celebrate, triumphing over the elements. That same spirit was also in evidence from the moment the Olympic flame arrived on these shores. The flame itself drew hundreds and thousands of people on its journey around the British Isles, and was carried by every kind of deserving individual, many nominated for their own extraordinary service. As London hosted a splendid summer of sport, all those who saw the achievement and courage at the Olympic and Paralympic Games were further inspired by the skill, dedication, training and teamwork of our athletes. In pursuing their own sporting goals, they gave the rest of us the opportunity to share something of the excitement and drama. We were reminded, too, that the success of these great festivals depended to an enormous degree upon the dedication and effort of an army of volunteers. Those public-spirited people came forward in the great tradition of all those who devote themselves to keeping others safe, supported and comforted. For many, Christmas is also a time for coming together. But for others, service will come first. Those serving in our armed forces, in our emergency services and in our hospitals, whose sense of duty takes them away from family and friends, will be missing those they love. At Christmas I am always struck by how the spirit of togetherness lies also at the heart of the Christmas story. A young mother and a dutiful father with their baby were joined by poor shepherds and visitors from afar. They came with their gifts to worship the Christ child. From that day on he has inspired people to commit themselves to the best interests of others. This is the time of year when we remember that God sent his only son 'to serve, not to be served'. He restored love and service to the centre of our lives in the person of Jesus Christ. It is my prayer this Christmas Day that his example and teaching will continue to bring people together to give the best of themselves in the service of others. I wish you all a very happy Christmas. "
Question: Who most probably is the maker of this speech?
Options: (A) Queen of Great Britain. (B) King of Great Britain. (C) Prime Minister of Great Britain. (D) Mayor of London.
Solution:
A