instruction:
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.
question:
Article: The red crab lives on Christmas Island in the Indian Ocean and has been found nowhere else in the world. But on its homeland it is a very significant species -- some 120 million individuals cover the rain forest floor and play a major role in determining the structure of the ecosystem. These large crabs are active during the day but prefer to stay in the shade and can die in the heat of direct sunlight. They feed on fallen leaves, seeds, fruits and flowers, recycling nutrients and helping to determine the spread and composition of native plants. Most of the year the red crabs live in the holes they dig throughout the forest. During the dry season they hide in these shelters to keep their body wet and remain there for two to three months. But when wet season returns in October or November they begin a legendary mass migration to their seaside breeding grounds, moving in color1ful wave that wash over all obstacles like roads (including special passages and some closed roads built for the red crab) and even seaside cliffs. The annual migration is also closely tied to the lunar schedule. The crabs arrive at the coast and breed at such a time that the females can produce eggs and develop them in caves for a dozen or so days before carrying them into the sea exactly when high tide turns between the last quarter and new moon. During this period sea level on the beaches varies the least and offers an easier approach, which is so important that if the weather delays the migration crabs will put off laying eggs until the next lunar month. Red crab eggs grow right away, and the young live in the sea for a month before returning to the coast, changing into air breathers, and slowly returning inland to begin the cycle once again.
Question: The red crab is a very significant species on its homeland because _ .
Options: (A) it's gradually dying out (B) it's not found anywhere else (C) it's well protected by the local people (D) its huge population affects its native ecosystem
answer:
D

question:
Article: My first reaction was annoyance. It was Friday afternoon, and I was within an hour of finishing my work for the week. As I was leaving, a nurse brought me one more patient message. The statement read: "Mm. Jones called to say that she has had blurred vision ever since her medical test this morning. " I smiled. Suddenly our tests were causing eye problems. This week my patients had questioned everything. My patient with high blood pressure had stopped coming to her treatment on the advice of an Internet chat room. A woman who had a mental problem was substituting (......) St. John' s word for her medication. Now Mrs. Jones was imagining problems. I rolled my eyes. My second reaction was worry. As I looked through her record, I tried to figure out why she would have blurred vision, but nothing in her record explained the new problem. She' s probably just anxious, I thought. Still, she wouldn't have called if she had been all right. I picked up the phone. What 1 next felt can only be described as delight. Before I made the call, the nurse ran in: Mrs. Jones called. Her vision is fine. Turns out she picked up the wrong glasses when she left the office. The X-ray technician has been having the same problem. I let out a lugh. Mrs. Jones had been right. Her vision had been blurred. Now we know why. Finally I felt shame. I came to realize what Mrs. Jones had taught me. I had first known she was wrong, that her anxiety had _ . Instead, my medical training had clouded mine. Now I feel thankful that Mrs. Jones figured it out before I made a mistake about our relationship. Patients come to me for my help. They pay me to listen, diagnose , treat and talk. That suggests trust; I must remember that, and trust them too.
Question: The writer smiled while reading the patient message because he knew _ .
Options: (A) Mrs. Jones would ask for more tests (B) the patient was being unreasonable (C) the nurse was joking with him (D) Mrs. Jones would call him
answer:
B

question:
Article: A new study says electronic toys are not helping babies learn. "Even if companies are marketing them as educational, they're not teaching the babies anything at this time," said Anna Sosa the study's author. Researchers listened to audio recordings of parents playing with their babies aged 10 months to 16 months. The researchers compared the experiences when the children played with electronic toys, traditional toys such as blocks, or when the children looked at books. What they found is that parents talked less with their babies when the babies played with electronic toys. Why is this important? Research shows that how quickly children develop language is often based on what they hear from parents. When the infants played with electronic toys, parents said little to their children. But with traditional toys, such as blocks, parents shared the names and descriptions of the animals, colors and shapes as their children played. There was even more information given by parents as their babies looked at the pictures in books. Of course, there is no need for parents to throw out electronic toys, but they should look at their infants' play with such toys as entertainment, not a learning experience. Toy Industry Association spokeswoman Adrienne Appell responded to the study. She said it is important that parents make time to play with their children. "Playing is a way that kids can learn so much, not only cognitive skills, but social and developmental skills," she said. She added that play should be balanced, including time for just "make believe" activities, as well as traditional and electronic toys.
Question: What's Anna Sosa's attitude towards companies claiming that their toys are educational?
Options: (A) supportive (B) doubtful (C) uninterested (D) indifferent
answer:
B