Answer:
A.) Heritable variations for some traits.
Explanation:
Edg 2021; got the answer right
The requirements for natural selection to occur are variations in characters among the individual of the population, variation in their relative fitness, heredity, and reproduction.
Natural selection may be defined as favorable variations through which organisms are better adapted and survive in the environment.
Natural selection always favors the most favorable variations which are present among the population. These variations are inherited from the parents or ancestors to their offspring.
Therefore, variations in characters and relative fitness must be there to occur natural selection.
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