Which of the following is the key factor in evolutionary change, according to Darwin's theory of evolution?

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According to Darwin's theory of evolution, variations in reproductive success are the key factor in evolutionary change. Individuals with advantageous traits that increase their chances of reproducing are more likely to pass on those traits to their offspring, leading to a gradual shift in the frequency of those traits in the population over time. This process is known as natural selection.

Which of the Following Is the Key Factor in Evolutionary