The answer is many because it’s more than one
A.
B is a run-on sentence. C and D are sentence fragments.
We need more info where is the story?
I believe the answers would be A and D but just in case I'm wrong I'm so sorry
Answer:
Number 2 is the correct option
Explanation:
According to the passage they gnaw (chew) at the green cones until they fall off the tree. They then pick out the seed or save it for later.