Two population of finches live on separate islands and rarely move from one island to another this is an example of

The correct answer is geographic isolation.

Geographic isolation refers to a term, which signifies towards a population of plants, animals, or other species, which are distinguished from exchanging genetic substance with other organisms of the same species. Usually, geographic isolation is the outcome of a coincidence or an accident.

It is considered that geographic isolation is a usual way for the procedure of speciation to start: mountains rise, rivers change course, organisms migrate, continents drift, and what was once a spontaneous population is differentiated into two or more smaller populations.

Geographic isolation refers to the distinction of two populations of the similar species or breeding group by a physical barrier, like a body of water or a mountain. Geographic isolation may eventually result in the populations becoming distinct species by adaptive radiation.

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