In 2006, the United States government created the largest marine wildlife preserve in the world. The preserve is located around the northwestern Hawaiian Islands. How do government-controlled wildlife preserves affect the environment?
A.
They help preserve an area's biodiversity.
B.
They encourage people to pollute and destroy sensitive areas.
C.
They lead to the overdevelopment of sensitive habitats.
D.
They ensure that none of Earth's species will go extinct.