Biology

The correct answer is B.Genetic variation.

Genetic variation refers to the variety of different types of genes within a species or population. This variation is essential for evolution and allows populations to adapt to changing environments. It results from mutations, gene flow, sexual reproduction, and other genetic mechanisms.

Here’s a quick breakdown of the other terms:

A.Speciation is the process by which one species splits into two or more distinct species due to genetic differences and isolation over time.

 ...