Which set of factors affects whether a human population is growing or declining?

• A. Birth rate, death rate, overall infant mortality rate, access to family planning, access to good nutrition, access to education, and postponement of marriage
• B. Birth rate and death rate only
• C. Economic indicators such as GDP growth and unemployment
• D. Geographic location and climate variables

Answer: (A)

Growth or decline in a human population is driven by the balance between births and deaths, and by the factors that influence those rates. The number of births establishes how many new individuals enter the population, while the number of deaths determines how many people leave it. Infant mortality matters because the survival of infants affects how many children reach adulthood and contribute to future population size. Access to family planning helps people space and limit births, and education—especially for women—and postponement of marriage generally lead to lower birth rates. Good nutrition and overall health improve survival and can influence fertility decisions as well. Together, these elements shape whether births exceed deaths or vice versa, producing growth or decline. Economic indicators or climate can influence these patterns indirectly, and geography affects where people live, but they do not directly set the growth balance in the way these factors do.