Let's think step by step! Mutations are what to evolution?
Options:
- (A) Plants growth
- (B) essential
- (C) optional
- (D) competition
- (E) dangerous
- (F) non essential
- (G) voluntary
- (H) allow growth
The thinking starts now:
Mutations are essential for evolution to occur. When that occurs, several things happen. Mutations are essential for evolution happen. The final answer: (B).