Given the stream of consciousness rationale, provide a reasonable question and answer. Rationale: Fertilization occurs when sperm swim to an egg inside an archegonium. Gametes in males are called sperm, and in women commonly referred to as eggs. Fertilization occurs when male gametes swim to an egg.
 The question and answer:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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What occurs when a male gamete swims to an egg?
Options:
- (A) permineralization
- (B) competition
- (C) movement
- (D) rapid expansion
- (E) fertilization
- (F) birth
- (G) copulation
- (H) ovulation
The answer is (E)