Which statement describes resource partitioning? 

A)  Resource partitioning occurs when one species preys on another species. 
B)  Resource partitioning occurs when species share resources at the same time. 
C)  Resource partitioning occurs when one species is a parasite of the other. 
D)  Resource partitioning occurs when a species evolves adaptations that allow it to reduce or avoid competition.

Resource partitioning occurs when different species evolve adaptations that allow them to reduce or avoid competition with each other for limited resources such as food, space, or sunlight. This can involve changes in behavior, morphology, or physiology. The goal is to maximize the use of available resources by reducing overlap and allowing coexistence. For example, different species of finches in the Galapagos Islands have developed different beak shapes and sizes to allow for different feeding strategies, reducing competition for food.