a fossil an animal species a new plant species a nonrenewable fuel
I gave my students this multiple choice question: A leaf is covered in mud during a landslide. After one million years, this leaf will most likely be ___.

Only one answer is correct among these 4 choices:
- a fossil
- an animal species
- a new plant species
- a nonrenewable fuel

Could you tell me which one is correct?

a fossil