Which of these statements is correct about the theory of natural selection? . a. it was accepted after evidences were proved non-testable.. b. it was proposed after several science magazines published it.. c. it was proved after scientists showed that its results are non-observable.. d. it was validated after scientists completed several investigations to gather evidence.

D. It was validated after scientists completed several investigations to gather evidence.

Explanation:

The importance of the Theory of Natural Selection relies on the fact that evolution gradually happened because of it, and nobody knew how it worked, only that species changed over time, but as the Theory of Natural Selection, the reproduction of the fittest, and the dying of the unfitted, was the result of adaptation, for example the Birds in the galapagos that over time changed their beaks depending on what they had available to eat.

answer:

it caused mass african migration, african populations to grow, african empires to topple, and racism against slaves to emerge.