New airplanes, which normally consume less fuel per ...

[daltonest1984]

New airplanes, which normally consume less fuel per passenger-mile, become less efficient for commercial airlines to purchase and use as
 
  A) average flight distances lengthen.
  B) fewer non-stop flights are scheduled.
  C) fuel prices fall.
  D) the demand for airline travel increases.
  E) the price of new airplanes falls.

Question 2

Which of the following is a prominent solution to adverse selection in used-car markets?
 
  A) An imposition of a tax on the sale of each unit in the used-car market
  B) The imposition of a price ceiling in the used-car market
  C) The imposition of a price floor in the used-car market
  D) Third-party certification of used cars

[ryrychapman11]

Answer to Question 1

C

Answer to Question 2

D

[daltonest1984]

Excellent

[vickyvicksss]

Gracias!