Is GDP a perfect measure of economic activity? How about the welfare of the population?
a. No, GDP is not a perfect measure of economic activity as it only measures the monetary value of goods and services produced in a country, and does not take into account factors such as informal economies and the distribution of income.

b. No, GDP is not a perfect measure of the welfare of the population as it does not consider factors such as income inequality, environmental sustainability, and the overall well-being of individuals.

c. Yes, GDP is a perfect measure of economic activity as it provides a comprehensive overview of a country's production and consumption levels.

d. Yes, GDP is a perfect measure of the welfare of the population as it reflects the overall level of prosperity and standard of living within a country.