What is needed for changes to occur?\nOptions:\n- (A) exercise\n- (B) mutations\n- (C) growth\n- (D) healthy animals\n- (E) environment\n- (F) evaporation\n- (G) Exfoliation\n- (H) births
Please answer the following question by reasoning step-by-step.
(B)
Mutations are essential for evolution to occur.

Evolution Change through time.

Mutations are essential for changes to occur.

.

The answer: (B)