Cross-cultural studies of childhood asthma find that

A) the problem is more serious in poorer nations.
B) it is almost nonexistent in affluent nations.
C) the rates are remarkably similar across countries.
D) the problem tends to be less serious in poorer nations.

Cross-Cultural Studies

Research that compares cultural norms, values, practices, and social behaviors among different societies to understand human behavior.

Affluent Nations

Countries with high levels of prosperity and economic wealth, often characterized by high standards of living and well-developed infrastructure.

Poorer Nations

countries with low levels of economic productivity, low per capita income, and generally low standards of living.