Match the concept in List I with the explanation in List II

Choose the correct answer from the options given below:

A-III, B-IV, C-II, D-I

The correct answer is Option (2) → A-III, B-IV, C-II, D-I

A. Preventive checks - III. Voluntary action to reduce population (like postponing marriage)

B. Positive checks - IV. Involuntary events to reduce population (like famine)

C. Life expectancy - II. Estimated number of years that an average person is expected to survive

D. Sex-ratio - I. Number of females per 1000 males in a given area at a specified time period