A hypothesis that has been tested extensively without being rejected and has won widespread acceptance is a:

Refer to Figure 7-1. Marginal social benefit is represented by which curve?

A) Supply B) D1 C) D2 D) All of the above represent marginal social benefit.

In the DVCs, underemployment frequently takes the form of:

A. factory workers who are working longer hours than they would prefer. B. workers who are employed inefficiently in small industry when they could be highly productive in agriculture. C. farmers whose productivity is very low. D. craft workers and artisans who are replaced by simple machinery and equipment.