Use reasoning to lead to the answer of the following question:
What is it called when the number of people suddenly gets smaller?\nOptions:\n- (A) competing for resources\n- (B) competition\n- (C) A Greek letter\n- (D) heat or cold\n- (E) Earth orbiting the Sun\n- (F) permineralization\n- (G) bottleneck effect\n- (H) relocation

(G)
Bottleneck effect occurs when a population suddenly gets much smaller.

Population is the number of people.

Bottleneck effect occurs when the number of people suddenly gets much smaller.

.

Final answer: (G)