What enables natural selection to occur?\nOptions:\n- (A) environment\n- (B) mutations\n- (C) competition\n- (D) relocation\n- (E) Darwin\n- (F) evolutionary development\n- (G) root growth\n- (H) research
Step-by-step reasoning process below:
(B)
Mutations are essential for evolution to occur.

Natural selection is the mechanism of evolution.

Mutations allow for natural selection to occur.

.

Thus, the answer is (B)