Question

what process involves the change of an alleles frequency in a population due to the fitness benefit it gives to the individuals who have it?
a selective breeding
b natural selection
c artificial selection

Explanation:

Natural selection is the process where heritable traits (like allele variants) that enhance an organism's fitness (survival/reproduction) increase in frequency in a population over generations. Selective breeding and artificial selection are human-directed, not driven by natural fitness benefits.

Answer:

b. natural selection