Figure 17-2 shows highest fitness toward the center of the curve. when individuals with an average form of trait have the highest fitness the result is
a-not predicable
b-disruptive selection
c-directional selection
d-stabilizing selection

Option-(D): Stabilizing selection.

Explanation:

The process in which a limited or specific number of the species get the chance to evolve through time or they get the best of chances to survive in any environment. As some of the traits may be lost due to the stabilizing form of natural selection.

Diversity is found all across the living beings, but when the process of natural selection follows the stabilizing pathway for selection then it will surely cause the end to diversity among beings.

For example:

The number of eggs that a bird lays and along with the weight of a human being child at the time of birth can be referred to as the stabilizing form of natural selection

im not intirely sure but i think the anwser is d relative humidity