Q: What is needed for changes to occur?
Options:
- (A) exercise
- (B) mutations
- (C) growth
- (D) healthy animals
- (E) environment
- (F) evaporation
- (G) Exfoliation
- (H) births
Let's think step by step below.
Mutations are essential for evolution to occur. Evolution Change through time. Mutations are essential for changes to occur.
Thus, the answer is (B).