Question

the passage is about how some insects are helpful to humans.
a bees pollinate crops.
b butterflies migrate in the winter.

Explanation:

The question is about identifying which insect - related fact shows how insects are helpful to humans. Bees pollinating crops directly benefits human agriculture as it aids in the production of food and other plant - based products. Butterflies migrating in winter is a natural behavior of butterflies and does not directly show their helpfulness to humans.

Answer:

A. Bees pollinate crops.