Question

an individual organism that exhibits a higher fitness level is more likely to _________.
a mutate
b hibernate
c struggle
d reproduce

Explanation:

In evolutionary - biology, fitness is measured by an organism's ability to survive and reproduce. Higher - fitness organisms are more successful at passing on their genes, which is mainly achieved through reproduction. Mutation is a random genetic change, hibernation is a survival strategy in harsh conditions, and struggle is related to competition for resources, but reproduction is most directly related to fitness.

Answer:

D. reproduce