Unemployment insurance schemes mainly increase:

Markets exist

A) because each person specializes in the production of many products. B) because people are self-sufficient. C) as an arrangement where buyers do not interact with sellers. D) so people can buy and sell things.

The idea that individuals should be taxed in proportion to the marginal benefits that they receive from public goods is called

A) the horizontal-equity principle. B) the ability-to-pay principle. C) the benefits-received principle. D) the vertical-equity principle.