Which of the following is a type of passive income?

Rental income from a property is considered a type of passive income because it typically requires minimal effort to maintain after the initial investment. Passive income generally refers to earnings derived from activities in which the individual is not significantly involved on a regular basis. In the case of rental income, once the property is purchased and set up for tenants, the income generated from leasing that property does not require extensive ongoing effort to manage.

Other types of income, such as interest from a savings account and royalties from a book, may sometimes be considered passive as well, but they can have different characteristics that do not strictly fall under the typical definition of passive income in a real estate context. Wages from a job, on the other hand, are classified as active income because they involve ongoing work and direct employee engagement to earn it.