melt dissolve become a fossil evaporate into vapor
I gave my students this multiple choice question: Paleontologists often find and study the remains of ancient plants and animals. When the remains of ancient plants and animals are covered by layers of sediment over time, the remains

Only one answer is correct among these 4 choices:
- melt
- dissolve
- become a fossil
- evaporate into vapor

Could you tell me which one is correct?

become a fossil