The model shows the effects of pesticides on an insect population.

Question

What role did natural selection most likely play in this situation?

a
The pesticide only affected the very young and the very old insects.
b
Some of the insects had mutations that made them resistant to the pesticide.
c
The pesticide caused mutations in some of the insects that allowed them to survive.
d
Some of the insects became stronger due to the pesticide.

Answer 1

b
Some of the insects had mutations that made them resistant to the pesticide.