If your guest is serious when he said that he just could not get enough of the lasagna you cooked and that the more he ate the more he wanted, you would conclude that the marginal utility of lasagna for him was
A) positive.
B) negative.
C) zero.
D) undefined.

Question

Quizplus · Accepted Answer

The statement "the more he ate the more he wanted" implies that his satisfaction (or marginal utility) from the lasagna was increasing with each additional unit consumed. Therefore, his marginal utility of lasagna was positive.

If Your Guest Is Serious When He Said That He