Question

what is a system of making, moving, selling, buying, and using things?

• scarcity
• economics
• trade
• opportunity cost

Explanation:

• Scarcity refers to limited resources relative to wants, not the full system of production, exchange, and use.
• Economics is the social science that studies the system of producing, distributing (moving), selling, buying, and using goods and services.
• Trade is only the buying and selling/exchange part, not the full system including making and using.
• Opportunity cost is the value of the next best alternative foregone, unrelated to this system.

Answer:

B. economics