If infant mortality declines and family-size attitudes change later, what may be the initial demographic effect?

Correct answer: Population growth may accelerate because child survival increases

Correct answer: A. Infant mortality is the number or rate of infant deaths in a population. When health care, nutrition, sanitation, or protection improve, more children may survive. If families continue having roughly the same number of births for some time, the number of surviving children rises before birth behaviour changes. This time gap can initially increase natural population growth. A is correct because it describes this temporary or early effect without claiming that it must continue forever. B is wrong because lower infant mortality does not immediately stop births. C is unrelated: migration remains movement between places. D is wrong because better survival does not necessarily make the total population decline. Later, families may revise their desired family size, so the growth pattern can change. Memory cue: survival may change first; fertility behaviour often responds later.