question_answer

A sentence is given below with two blank spaces. Fill in the blanks with most appropriate pair of words given in options, in same order, to make the sentence meaningfully complete.

It is now a proven fact that _____ of child mortality is the best ________ for family planning in developing countries.

A) checking, method

B) prevention, incentive

C) control, formula

D) decrease, encouragement

E) None of these