Question

when selection operates to eliminate intermediate phenotypes and favor the two or more extreme phenotypes, it is referred to as
multiple choice
stabilizing or balancing selection.
disruptive selection.
random chance.
directional selection.

Explanation:

Stabilizing selection favors intermediate phenotypes. Directional selection favors one extreme phenotype. Random chance is not a type of selection related to phenotype favoring in this context. Disruptive selection (also known as diversifying selection) is the process where selection eliminates intermediate phenotypes and favors two or more extreme phenotypes.

Answer:

disruptive selection.