One of the Factors That Helps Animal-Pollinated Flowering Plants Transfer

One of the factors that helps animal-pollinated flowering plants transfer pollen to plants of the same species is that

A) pollinators are able to rapidly extract nectar from any species of flower, regardless of the pollinators' past or recent experience with a given flower type.
B) most pollinators broadly use many different types of flowers.
C) many pollinators have limited learning capacities and are most successful at obtaining food if they continue to visit the same type of flower after learning how to extract its nectar.
D) each species of pollinator typically visits flowers of one and only one plant species.