Wei,an Exchange Student from China,was Called Upon to Give an Example

Multiple Choice

Wei,an exchange student from China,was called upon to give an example of an externality that she experienced in her homeland.Which of the following would she cite?

A) the decreasing number of persons afflicted with SARS
B) government statistics showing an increasing unemployment rate
C) weather bureau warnings against exercising outdoors
D) the increasing number of postsecondary graduates