Answer: b) overproduction
Step-by-step explanation:
Overproduction is a process in which each generation of the living being produce more offspring than the environment can actually support. As a result of this competition takes place for the limited resources. Some traits helps in survival of these organisms in the limitation. Such organisms survive and reproduce. This is an example of natural selection.
The behavior of production of thousands of frog eggs is the example of the overproduction.