If a runner's demand for bottled water increases, and the market price remains unchanged, the runner's consumer surplus
A) falls because the difference between what the runner is willing to pay and price decreases
B) falls because the marginal utility of bottled water falls when the demand curve shifts to the left
C) remains constant because price doesn't change
D) increases
E) is zero

Question

Quizplus · Accepted Answer

When a runner's demand for bottled water increases, it means they value it more highly, so the difference between what they are willing to pay and the market price increases, thus increasing their consumer surplus.

If a Runner's Demand for Bottled Water Increases, and the Market