Question

question 10 of 10
if a country had 4 million people in 2000 and 3.5 million people in 2010, which of the following factors must have contributed to the population change?
a. an increase in the average lifespan
b. a decrease in the crude death rate
c. an increase in the infant mortality rate
d. an increase in the crude birthrate

Explanation:

• An increase in average lifespan (A) would likely lead to population growth, not decline.
• A decrease in the crude death rate (B) would also contribute to population growth.
• An increase in the crude birthrate (D) would cause population to rise.
• An increase in infant mortality rate (C) means more infants die. This can contribute to a population decline as fewer new individuals survive to add to the population size.

Answer:

C. An increase in the infant mortality rate