Teacher: 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.
Teacher: Now, understand the problem? If you are still confused, see the following 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: B
Reason: 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 instance: Article: Bluebirds looking secretly from nest boxes. Tadpoles swimming in a pond. Tiger swallowtails flying quickly around a butterfly bush. And over here, a class of students watching it all. A field trip to a nature center? No, it's a schoolyard. With some work on your part, it could even be your schoolyard. Interested in building a schoolyard habitat? Here's how to get started. Gather a Team Students can do a lot on their own, but you'll need adults for a project this big. Get teachers, parents, and even the headmaster interested. Don't forget the maintenance staff--they know more about your school's yard than anyone else and can give you lots of help. Also, ask around your neighborhood for gardeners, naturalists, and others willing to give advice. Map Your Site Which part of the schoolyard can you turn into a habitat? Is there an unused corner of the playground? Part of a lawn or field you could let go wild? You'll need to make a map of the area showing what's there now. Then you can figure out how you want to change it. For that, you need a plan. Plan a Habitat Here's what you'll need to make your area attractive to wildlife. Food: Plant flowers, bushes, and trees. These provide seeds, berries, leaves, flowers, and sweet liquids. And all of these feed birds, and insects. You can also add some feeders for squirrels and birds. Where possible, stick with native plants--wild plants that grow naturally in your area. They need less care, which means less work for you. Water: A small pond, birdbath, or even a shallow dish of clean water in the ground will attract birds. Other small animals like insects may visit as well. Shelter: Bushes and trees make great escapes for birds. Tall grass and "weeds" are home to grasshoppers, garter snakes, and some ground-nesting birds. You can also add stone piles and brush piles. Places to Raise Young: Butterflies need special plants to lay their eggs on. Frogs and toads lay eggs only in shallow water. Many birds use birdhouses; others nest in trees and bushes. In fact, nearly all your shelters may become homes for wild young. Put It on Paper Using the map you made of your area, draw in the changes you want to make. Mark where the plants, nest boxes, and other items will go. Remember, this is a long-term plan--you don't have to do everything this spring. Maybe you could put up a few birdhouses and plant some butterfly bushes now and save the trees and bushes for next year. Even a small start is a big step for wildlife. Reach for Resources To make the habitat happen, you'll need lots of plants, seeds, and other supplies. You'll also need to buy or borrow tools and maybe even some heavy equipment. Now's the time to reach out for donations. Start by asking your parent-teacher organization. Then go to garden clubs, garden stores (they might give you a discount), local government agencies, and businesses. If they can't donate supplies or money, ask if they can donate workers! The workers can help build the habitat. You'll also need people to help maintain it. Some schools ask their students' families to take turns during the summer. Each family maintains the habitat for a couple of weeks. Build Your Design Now you can dig in. Set a date, and get growing!
Question: What is this article mostly about?
Options: (A) How to start a wildlife habitat. (B) Making a place where animals can hide. (C) How to gather food for a wildlife habitat. (D) Creating places for people to plant gardens.
Student:
A