Biology

The correct answer is: B.The gene pool remains stable.

Explanation:

When there is no migration in a population, the gene pool (the collection of all alleles in a population) tends to remain stable. Without the introduction of new alleles through migration, the allele frequencies are more likely to stay constant over time, assuming no other evolutionary forces like natural selection, genetic drift, or mutation are acting.

The other options are incorrect because:

A.Genetic variation increases: Without migration, no new a...