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19. Which scenario is the most likely to result in natural selection that leads to adaptive evolution in a population ofhumans?A) Individuals in Australia only reproduce by random mating.B) Individuals colonize another planet and become isolated from earth.C) A tsunami kills hundreds of thousands of people in Southeast Asia.D) A new influenza strain becomes an epidemic and kills all individuals over age 50.E) Mortality due to heart disease increases to 80% in middle-aged Americans.

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