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Like most 1-year-olds, Antoine sucks reflexively when a sucker is placed in his mouth. For the past few days, Antoine's mother has turned on the television as she gives Antoine his daily sucker. Today, Antoine's mother turns on the television, but does not have a sucker to give Antoine. Much to her surprise, Antoine begins to make a sucking motion despite having no sucker. Which theory best explains Antoine's behaviour?
Opportunity Cost
The cost of the next best alternative foregone when making a decision.
Production Possibilities Frontier
A graph that shows the combinations of two goods that an economy can produce using all available resources and technology efficiently.
Constant
A value or factor that does not change in mathematical expressions or experiments, representing stability within a specified context.
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