A key characteristic of self-disciplined people is that they ________.

A) impose punishment and suffering on themselves
B) rebel against goals set by management
C) find very little joy in working
D) work toward attaining goals without being distracted

The economic boom of the early 1940s resulted mostly from

A) increased government expenditures.
B) falling prices of oil and other natural resources.
C) an increase in the growth rate of the money supply.
D) rapid developments in transportation, electronics, and communication.