Please answer all the questions is economics

The Human Development Index (HDI) is a composite statistic of life expectancy, education (mean and expected years of schooling), and per capita income indicators, which are used to rank countries into four tiers of human development.
The correct option is C. Health, education and income.

Economic growth is typically defined as an increase in the real output (or real GDP) of an economy over a period of time.
The correct option is A. Increase in real output.

The Harrod-Domar model is an economic model of growth that emphasizes the importance of savings and investment as key determinants of economic growth.
The correct option is A. Savings and investment.

Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
The correct option is C. Development meeting present needs without compromising future generations.

While GDP and per capita income measure economic growth, the Human Development Index (HDI) is considered a broader and better indicator of economic development because it incorporates social factors like health and education alongside income.
The correct option is C. HDI.