Natural capital is not a type of investment, but rather a stock of natural resources that can be used to produce goods and services.

Domestic savings are the primary source of investment in developing countries, as they are less reliant on foreign capital and international aid.

Increased inequality is not a positive impact of investment on economic growth, as it can lead to social unrest and political instability.

The Harrod-Domar model suggests that economic growth is primarily determined by the rate of investment, the rate of population growth, and the rate of technological progress.

Abundant natural resources are not a challenge to investment in developing countries, as they can be used to attract foreign investment and generate revenue.

A factory is an example of physical capital, as it is a tangible asset that can be used to produce goods and services.

All of the above are examples of human capital, as they represent the skills and knowledge that workers possess.

All of the above are examples of financial capital, as they represent claims on future income.

Portfolio investment is not a type of foreign direct investment, as it does not involve the establishment of a new business or the acquisition of an existing business.

Increased inequality is not a benefit of foreign direct investment for developing countries, as it can lead to social unrest and political instability.

All of the above are challenges to foreign direct investment in developing countries, as they can make it difficult for foreign investors to operate profitably.

All of the above are policies that governments can use to promote investment, as they can make it more attractive for businesses to invest in their countries.

All of the above are measures of the return on investment, as they provide information about the profitability of an investment.

There is no such thing as an investment with no risk. All investments carry some degree of risk, whether it is political risk, economic risk, or financial risk.

All of the above are strategies that investors can use to reduce risk, as they help to spread out the risk of an investment across different assets or markets.