Question

which factor of evolution is considered the most well - known and directly tied to the concept of evolution? small population natural selection migration

Explanation:

Natural selection is a fundamental concept in evolution. It was proposed by Charles Darwin and is widely known. It involves the differential survival and reproduction of individuals due to differences in phenotype. This process leads to the adaptation of species over time. Small population (genetic drift) and migration (gene flow) are also factors in evolution but are not as well - known or central to the core concept of evolution as natural selection.

Answer:

Natural Selection