National parks limit people from seeing wildlife. National parks limit mining, logging, and hunting. National parks protect land for farmers and ranchers. National parks protect land for people to build houses.
I gave my students this multiple choice question: In 1872, the United States created a national park called Yellowstone. The park includes more than two million acres in the three states of Idaho, Montana, and Wyoming. Which statement best explains why national parks have a positive effect on ecosystems?

Only one answer is correct among these 4 choices:
- National parks limit people from seeing wildlife.
- National parks limit mining, logging, and hunting.
- National parks protect land for farmers and ranchers.
- National parks protect land for people to build houses.

Could you tell me which one is correct?

National parks limit mining, logging, and hunting.