a gray squirrel eating an acorn a raccoon in a hollow log a blue whale migrating a tick feeding on a coyote
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What is an example of a shelter in an ecosystem?
Possibilities:
- a gray squirrel eating an acorn
- a raccoon in a hollow log
- a blue whale migrating
- a tick feeding on a coyote

a raccoon in a hollow log