Final answer:
Disruptive selection, also known as diversifying selection, increases genetic variability in a population by favoring extreme phenotypes over the intermediate ones.
Step-by-step explanation:
Among the types of selections, disruptive selection (also known as diversifying selection) results in greater genetic variability in a population. Disruptive selection occurs when extreme phenotypes are favored over the intermediate phenotypes, potentially leading to a bimodal distribution. This type of selection can foster the presence of two distinct groups within a population, thereby increasing genetic diversity.
Stabilizing selection reduces genetic variability by favoring an intermediate phenotype and selecting against extreme variations. Directional selection, on the other hand, shifts the population traits in one direction by favoring one extreme trait over others.