The term for the number of years necessary for a population to double in size, given its current rate of growth, is

a. doubling time.

b. demographic transition.

c. growth rate.

d. growth time.

The term for the number of years necessary for a population to double in size, given its current rate of growth is doubling time. This is usually used to population, inflation, consumption of goods, and many other things that is expected to grow over time.

The answer would be letter A.