Over various spans of time, human populations have increased, decreased, or remained the same, and at both global and local levels. Which statement best explains this observation?

A. Unlike other populations, the human population changes size because of specific choices of its member
B. Unlike other populations, the humans population has the ability to grow rapidly without limit.
C. Like other populations, the human population is affected by a variety of factors in the environment.
D. Like other populations, the humans population increases and decreases in a cyclical pattern.

Help!! 9th grade Biology
The answer is either A,B,C or D