Improvement in health facilities most directly affects which component of population change?

Correct answer: Death rate

The direct answer is A: death rate. Population change is commonly understood through births, deaths, and migration. Better hospitals, vaccination, medicines, trained health workers, sanitation, and emergency care can prevent or treat diseases and therefore reduce the number of deaths, especially premature deaths. Step 1: improved facilities provide better treatment and prevention. Step 2: fewer people die from avoidable causes. Step 3: the death rate falls, which can increase natural population growth if the birth rate does not fall by the same amount. Option A is correct. B, area, describes the size of land and is not a population-change component. C is not a fixed result of better health facilities; migration direction depends on many economic and social factors. D, soil fertility, concerns agriculture, not the demographic process. Memory cue: health improvement usually means fewer deaths; do not confuse it with an automatic change in migration.