Which of the Following Best Describes the Relationship Between Population

Which of the following best describes the relationship between population growth and early human migration?

A) The two are completely unrelated.
B) Because of their rapid migration, humans almost experienced a period of potential extinction.
C) Population growth compelled humans to constantly seek out new sources of food and forced humans to adapt to a wide range of climates.
D) Migration dramatically slowed the growth of the human population, as different groups lost touch with one another.