阅读下面短文，从每题所给的A、B、C、D四个选项中选出能正确回答所提问题或完成所给句子的最佳答案。
Andrew Holleman, a 12-year-old boy, loved playing in the open land near his home. The land was wet and forested, and made a home for birds, other animals and many different plants.
It made the perfect place for him to study and get to know the nature. He had seen some red-tail hawks, red foxes, wood turtles and other animals. He also found special native flowers.
Suddenly it was announced that the "empty" land would be improved by a lot of houses on it. The plants would be removed, the animals would run away and most would probably die. Then the wet soil would be covered with extra grounds.
When he heard about the news, he was not happy. He was very worried that the land and water would be polluted.
Andrew wrote down clearly all the research he had down about the area, and how the houses would affect the local environment. He sent letters to members of local government and television reporters. He also called on his neighbors toopposethe building of the houses.
Although he was only 12 years old, he had the courage and wisdom of a person much older. Andrew' s teachers described him as gentle, shy and active. His classmates also admired how much he knew about local animals and plants, and the environment. Each day after school, Andrew went door-to-door, to ask the people to sign, who did not want the houses to be built. In only one month, he got the signatures of 250 people.
In the end, the land remained a safe place for birds, animals and plants that belonged there.
Andrew won many prizes for his brave and great work to stop the houses being built, and thus help save the environment.