Question

which of the following would cause a demand curve for a good to be price inelastic?
a. there are a great number of substitutes for the good.
b. the good is a necessity.
c. the good is a luxury.
d. the good is inferior.

Explanation:

Price inelastic demand means quantity demanded changes little when price changes. Necessities have inelastic demand because consumers need them regardless of price shifts. Many substitutes make demand elastic, luxuries have elastic demand as they're non-essential, and inferior goods' elasticity depends on other factors, not inherent inelasticity.

Answer:

b. The good is a necessity.