Question

the price elasticity of demand for a vertical demand curve is:
a. unitary elastic.
b. elastic.
c. perfectly inelastic.
d. perfectly elastic.

Explanation:

A vertical demand curve means the quantity demanded does not change at all, regardless of any change in price. Price elasticity of demand measures how much quantity demanded responds to price changes; when quantity is unresponsive, it is perfectly inelastic.

Answer:

c. perfectly inelastic.