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.

Let me give you an 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
The answer to this example can be: B
Here is 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.

OK. solve this:
Article: Recently a friend of mine wrote to me about her experience in Holland: A very old man asked me to come to his apartment, and he would donate a bike to the project. I went over to get it, and it was half a bike, which was locked to a pole and had obviously been there for years. The temperature was well below zero. It became clear that he was in fact super-lonely, and torn between usual Dutch distrust of strangers and desperation for human contact. He finally begged me to come up to his apartment (where he obviously lived alone). You may know that Dutch people are the tallest in the world, reflecting a very high standard of living. But -- if this old man is not unusual -- reducing the loneliness of old people isn't part of the Dutch social contact, admirable as _ may be. I recently watched the Frontline program Sick Around the World. It suggested that the old man isn't unusual. In England, where doctor visits are free, a doctor said he has several patients who come weekly, purely because they're lonely. In Japan, some patients have their blood pressure measured very often -- most probably for the same reason. In Taiwan, if you see a doctor 20 times in one month, someone from the government will come to talk to you. Not about loneliness -- about overuse of medical care. The Frontline program made nothing of any of these facts, which were included to show that access was easy. Really the idea that everyone needs human contact isn't mysterious or controversial. My explanation is there's a double blow: Not only do lonely old people have little power, it's also clear that their problem (loneliness) isn't caused by a "chemical imbalance". So no drugs can be sold to treat it. And there's no diagnostic category. When these lonely old people use what little power they have by visiting their doctor, the doctor -- I'm assuming -- doesn't do anything to get rid of the loneliness. Even if you visit 20 times in a month.
Question: The story of the Dutch old man at the beginning of the passage serves as _ .
Options: (A) an example of the lonely people (B) an important reminder of her friend (C) an introduction to Dutch social problems (D) an example of Dutch suspicion of strangers
Answer:
A