When Mario's income decreases, he buys more pasta. For Mario, pasta is a normal good

Suppose the country of Popcorn produces only jets and corn. If Popcorn cannot produce any more jets without giving up corn, we say that Popcorn has achieved

A) the highest marginal benefit. B) production efficiency. C) the lowest marginal cost. D) the highest opportunity cost.

Whenever productive resources are used to make capital goods

A) society is not producing efficiently. B) society is giving up current consumption. C) the production possibilities curve becomes flatter. D) absolute advantage occurs.