Answer:
The correct answer is option D.
Step-by-step explanation:
Resource partitioning is a situation in which different type of living organisms live in the same ecosystem or environment in a way so it is easy for them to co-exist because they are not sharing the same resources.
Two species of squirrels can co-exist because both types of squirrel are feeding on acorns but they are not getting it from the same location, one feed on the trees, the other feed on the ground.
Thus, the correct answer would be option D.