What is demography, what controls population change, and when did the greatest world population increase occur?

Here are the answers to the questions:

Question 1:
Demography is the study of human population.
The correct option is D. Demography encompasses the study of population size, composition (e.g., age, sex structure), and distribution (how people are spread across an area).

• D. size, composition and distribution

Question 2:
Population change is controlled by which three factors.
The correct option is C. The three primary factors that determine population change are births (natality), deaths (mortality), and migration (movement of people into or out of an area).

• C. birth, death and migration

Question 3:
The greatest world population increase occurred in
The correct option is D. The most significant period of world population growth, often termed the "population explosion," began in the 20th century, particularly after 1950, due to advancements in medicine, sanitation, and agriculture.

• D. 1900 AD.