Temporary changes in the price level caused by changes in the business cycle are called:

Refer to Figure 4-1. If the market price is $1.50, what is the consumer surplus on the second burrito?

A) $0.50 B) $1.00 C) $1.50 D) $3.50

Which of the following was not a major factor in explaining the decline of death rates in the U.S. in the late 19th and early 20th century?

a. urbanization b. improvements in sanitation c. improvements in medical treatments d. Both a and c are correct.