Doubling the circumference of an oil pipeline more than doubles the volume of oil that can be pumped through. This is an example of

If consumer tastes are changing more in favor of the consumption of a particular good the:

a. market demand curve will shift to the left. b. consumer will move up a given demand curve, decreasing the quantity demanded. c. consumer would move down a given demand curve, decreasing the quantity demanded. d. consumer would move down a given demand curve, increasing the quantity demanded. e. market demand curve would shift to the right.

A central bank has the most control over:

a. A nation's preferred asset ratios. b. The monetary base. c. The real exchange rate. d. The velocity of money. e. The M2 money supply.