Which explanation is accurate about the survival and reproduction of a population?

Question

a
If there are a limited variety of traits in a population, most traits will be a good fit with the environment.
b
If there are a limited variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.
c
If there are a wide variety of traits in a population, most traits will be a good fit with the environment.
d
If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce.

Answer 1

d. If there are a wide variety of traits in a population, it is more likely that some individuals will be able to survive and reproduce. This is because a diverse range of traits increases the likelihood that some individuals will have advantageous adaptations that allow them to better survive and reproduce in their environment.