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.
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Question: Article: Many people say dolphins are very intelligent. They seem to be able think, understand, and learn things quickly. But they are smart like humans or more like cats or dogs? Dolphins use their brains differently from people. But scientists say dolphin intelligence and human intelligence are alike in some ways. How? FACT 1: Talk to Me Like humans, every dolphin has its own "name". The name is a special whistle . Each dolphin chooses a specific whistle for itself, usually by its first birthday. Actually, scientists think dolphins, like people, "talk" to each other about a lot of things, such as their age, their feelings, or finding food. And, like humans dolphins use a system of sounds and body language to communicate. But understanding their conversations is not easy for humans. No one "speaks dolphin" yet, but some scientists are trying to learn. FACT 2: Let's Play Dolphins are also social animals. They live in groups called pods, and they often join others from different pods to play games and have fun ---just like people. In fact, playing together is something only intelligent animals do. FACT 3: Fishermen's Helpers Dolphins and humans are similar in another way: both make plans to get something they want. In the sea of southern Brazil, for example, dolphins use a interesting strategy to get food. When fish are near a boat, dolphins signal to the fishermen to put their nets in the water. Using this method, the men can catch a lot of fish. What is the advantage for the dolphins? Why do they assist the men? The dolphins get to eat some of the fish.
Question: What is the text mainly about?
Options: (A) The comparison between dolphins and humans. (B) The relationship between dolphins and humans. (C) Different types of dolphins. (D) The habitual behavior of dolphins.

Answer: A

Question: Article: Language is always changing. In a society where life continues year after year with few changes, the language does not change either. The earliest known languages had difficult grammar but a small, limited vocabulary. Over the century, the grammar changed, and the vocabulary grew. For example, the English and Spanish people who came to America during the sixteenth century gave names to all the new plants and animals they found. In this way, hundreds of new words were introduced into English and Spanish vocabularies. Today life is changing very fast, and language is changing fast too. There are several major language families in the world. Some scientists say there are nine main families, but other scientists divide them differently. The languages in each family are connected, and scientists think that they came from the same parent language. About 3 percent of the people in the world speak languages that are not in these major families.
Question: The early language had _ .
Options: (A) a lot of problems (B) words and easy grammar (C) words but no grammar (D) grammar but not many words

Answer: D

Question: Article: The joys of reading are the ones I've known since childhood, and they continue to this day. And the benefits of reading, for me, are immeasurable. Loving the written words was what led me to journalism. But not every child has the chance to enjoy these pleasures and benefits. In Buffalo---one of the poorest cities in the nation---this is particularly true. Over a third of Buffalo's children are living in poverty. Families who struggle for food and clothing certainly don't have the money for books. That's where a Buffalo news-sponsored program called "Books for Kids" steps in. Through an unusual book drive and collection of cash donations, the effort places books into the hands of needy local children, usually through community organizations that serve children. Since it began in 1995 ---the _ of Rose Ciotta, then a Buffalo news reporter, along with two wonderful local Buffalo State college professors, Geraldine Bard and Elizabeth Cappella ---the effort has distributed more than 1.5 million books to children. Returning to the personal side, both of my children know the value of putting books in the hands of children. Successful students themselves became interested from an early age. My sons, Alex, now a college senior, founded the Books for Kids High School Coalition as a Canisius High School student. He handed it down to his sister, Grace, a Nardin Academy senior this year, who has carried on the tradition of organizing book drives in local high schools. It's been one of the great satisfactions of my life that both of my children have been deeply involved in the program.
Question: What is main purpose of "Books for Kids"?
Options: (A) To encourage students to read more books. (B) To inspire youths to help the poor. (C) To help children develop good reading habits. (D) To provide books for poor children.

Answer:
D