Which statement is NOT a theory about how change occurs in species?

The correct answer is "Change happens in a slow, steady way".

Explanation:

The missing options of this question are:

A. Change happens in quick bursts.

B. Change happens in a slow, steady way.

C. Change happens only when a species becomes extinct.

The correct answer is option B. "Change happens in a slow, steady way".

The statement of "Change happens in quick bursts" is part of the punctuated equilibrium theory, which states that  quick speciation events happen upon the presence of drastic environmental events. The statement of "Change happens only when a species becomes extinct" is part of a theory that states that before a species faces dramatical physical changes, other species must become extinction. On the other hand the statement of "Change happens in a slow, steady way" is not formally part of any theory.