Explanation:

- Corporate tax is a tax imposed on the income or profit of corporations.

- Personal Income: Refers to the total earnings of individuals and households. Typically includes wages, dividends, bonuses, etc. Corporate tax is not part of personal income as it refers to income/profits of businesses, not individuals.

- National Income: Sum of all incomes earned by residents of a country, including wages, rent, interest, and profit, after accounting for depreciation and taxes like corporate tax.

- Domestic Income: Total income generated within a country's economy, including corporate profits.

- Private Income: Consists of income received by private individuals and includes corporate tax, as it influences overall earnings of businesses.

Correct Answer: Option 1 - Personal Income