Economists consider environmental pollution to be a(n)

Refer to the figure that shows the market for U.S. health care. Other things equal, which of the following would shift the supply curve for medical care from S 2 to S 1 ?

A.  An aging population.
B.  Significant cost-increasing medical technology.
C.  Expansion of the Medicare program to include prescription drugs.
D.  Lower medical malpractice insurance premiums.

A radio ad conveys the hours a store is open. By doing this, the ad ______.

a. creates a more elastic demand curve. b. creates a demonstration effect c. communicates important information d. communicates misleading information