Explanation:

- An economy can indeed be classified in several ways.

- Capitalist: An economy where private individuals own and control property and businesses, aiming for profit.

- Socialist: An economy where the government owns and controls production resources, aiming to distribute wealth more equally.

- Mixed: A blend of capitalism and socialism, featuring both private enterprise and government regulation.

- Due to varied structures, economies may fall under any one or combination of these categories.

Correct Answer: Option: 4, All of these