user: 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: In 1987, while serving as the public affairs officer at Fort Bragg, I would frequently visit the local high schools to speak to the students about the Army. As alieutenant colonel , I found it particularly rewarding to talk with the teenagers about the benefits of military service, if only for a few years of their lives. During one of these visits, I reported to the secretary in the principal's office to let her know that I was here for the third-period class. I was a little surprised when she told me. "The principal would like to see you before you go to the class." As I entered his office, I was greeted by a gentleman who appeared to be in his late thirties, and he welcomed me with a smile and a handshake. "You don't remember me, do you?" he said. I looked closely at the face again and could not recall where we may have met before. "You were my company commander in basic training at Fort Jackson in 1970," the principal said. "Let me help you out," he suggested. "You gave me a three-day pass to go home and see my newborn baby." I immediately remembered the incident! "Yes," I said. "I remember now." It was the only three-day pass I had issued because the soldiers were on their way to Vietnam immediately after they finished training. But I knew if I did not let him go home to see his son and _ , I would regret denying the opportunity he had to be with his family. "Come on, Colonel. I'd like to introduce you to 'the baby'. He's in your third-period class. By letting me go see him, you gave me a reason to stay focused and to come home safe from that war. Thank you , sir." It was the most rewarding class I had ever given, and I had no problem in telling the students about the bonds of friendship and the values that Army life can provide...and that can last a lifetime. 
 Question: In the writer's opinion, talking to teens about the Army is  _  . 
 Options: (A) a forced task (B) a pleasant thing (C) an unavoidable duty (D) an embarrassing experience
Solution:

assistant: B