Biology

The correct answer is: A.the changes in allele frequencies (genes), in a population, happening due to random events/circumstances.

Explanation:

Genetic drift refers to the random changes in allele frequencies in a population over time due to chance events rather than natural selection. In small populations, these random fluctuations can have a significant impact on the genetic makeup of the population. Genetic drift can lead to the loss or fixation of alleles by random events, not by any selective advantage.

The other options are incorrect because:

B.It is an example of primary succession: Primary succession refers to the development of an ecosystem in an area that was ...