Imposing a tax on an activity that generates an external benefit will cause participants in the activity to increase the amount of the activity undertaken

Which one of the following groups has a below-average incidence of poverty?

a. persons who are divorced or separated from their spouse b. families headed by a female c. persons 18 to 24 years of age d. married-couple families

Lately, the Chinese authorities seem to be backing away from ____ and the Yuan has ____ relative to the dollar.

A. managed-float; devalued B. currency peg; depreciated C. floating rate; revalued D. currency peg; appreciated