The use of seat belts and other automobile safety features making ...

[sjones]

The use of seat belts and other automobile safety features making bicycling more hazardous can be explained by the economic concept known as
 
  A) the principle of diminishing returns. B) the principle of voluntary exchange.
  C) the real-nominal principle. D) the marginal principle.

Question 2

A bank's reserves
 
  A) can be held as deposits with the Federal Reserve.
  B) are the sum of its excess and required reserves.
  C) can be held as cash in its vault.
  D) all of the above.

[popopong]

Answer to Question 1

D

Answer to Question 2

D