If a person can be prevented from using a good, the good is said to be ?

Which of the following is an example of a common resource ?

A. a firework displays

B. national defense

C. iron one

D. a national park

A negative externality affect market efficiency in a manner similar to ?

A. an excludable good.

B. a private good

C. a common resource

D. a public good.

A positive externality affects market efficiency in a manner similar to a ?

A. rival good

B. public good

C. private good

D. common resource

A free rider is a person who ?

A. receives the benefits of a good but avoids paying for it.

B. pays for a good but fails to receive any benefit from the good

C. fails to produce goods but is allowed to consume goods.

D. produces a good but fails to receive payment for the good

Public goods are difficult for a private market to provide due to ?

A. the rivalness problem

B. the public goods problem

C. the Tragedy of the Commons.

D. The free-rider problem.