While you and your roommate are eating your nightly Hamburger Helper meal, your roommate says "I'll never eat Hamburger Helper again once I graduate and start making some real money!" In your roommate's eyes, Hamburger Helper is currently

Secondary markets make financial instruments more

A) solid. B) vapid. C) liquid. D) risky.

Producers of computer software are plagued with the problem of “pirating,” that is, many people copy software legally purchased by others. The industry estimates that for each legal copy of a program, there are two pirated copies in use. The industry wants strict laws for the enforcement of its “intellectual property rights,” but enforcement is obviously very difficult. Economists call this problem

A. depletability. B. externality. C. durability. D. nonexcludability.