Governments can address the adverse selection problem in the health insurance market by requiring all its citizens to have health insurance

In the figure above, suppose that $20 is the market equilibrium price. Which area is the consumer surplus?

A) A B) B C) A + B D) B - A E) B ÷ A

An increase in the interest rate could have been caused by

a. a fall in the price level causing the money-demand curve to shift leftward. b. a fall in the price level causing the money-demand curve to shift rightward. c. a rise in the price level causing the money-demand curve to shift leftward. d. a rise in the price level causing the money-demand curve to shift rightward.