Small populations are subject to changes in allele frequencies simply due to random chance, such as the accidental death of an individual. this process is known as

Small populations are subject to changes in allele frequencies simply due to random chance, such as the accidental death of an individual. This process is known as genetic drift.
Genetic drift refers to some changes in the gene variant (allele) which leads to survival or death of a certain organism.

C.

Explanation:

Before you propose a position you have to identify the problem and reasoning