Assertion (A) and Reason (R) are given below. Choose the correct option: Assertion (A): Population explosion occurs when death rates decline rapidly but birth rates remain high. Reason (R): Societal reproductive behavior changes instantly with improvements in healthcare.
A is true, but R is false
A is true — this is the classic second stage of the demographic transition: improved healthcare lowers mortality (especially infant mortality) rapidly, while fertility remains culturally slow to adjust, producing population explosion.
R is false — reproductive behaviour does not change instantly; it lags healthcare improvements by a generation or more, which is precisely why the gap between death and birth rates widens and population explodes.
Hence, A is true but R is false.
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