Multiple Choice
After swimming 100 laps at the pool, Erik decides to swim 10 more before lifting weights. This statement best represents this economic concept:
A) Resources are scarce.
B) The real cost of something is what you must give up to get it.
C) "How much" is a decision at the margin.
D) There are gains from trade.
Correct Answer:
Verified
Correct Answer:
Verified
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