Concept:Standard of living is best compared using the average income per person in a country.
Explanation:The standard of living measures the economic well-being of citizens.
Comparing total national income alone is misleading because population sizes differ.
Gross national product per head, or
GNP per capita, gives the average income earned by each person.
A higher
GNP per head usually means more goods and services are available per person.
Therefore, it is a reliable indicator for comparing living standards between two countries.
The number of industries, total national income, or arms and ammunition do not directly show individual well-being.
Answer:A. Gross national product per head