Answer:
c. $25, because this is the highest valued alternative forfeited.
Step-by-step explanation:
Opportunity cost is the value given up as a result of making a different choice. It is the value of the next best alternatives given up. Opportunity cost arises as a result of scarcity of resources. Economists analyze opportunity cost in attempts to find the best use of available resources.
Watching television is the next best alternative because it has the highest value at $25. The other options are viable, but the opportunity cost is the value of the next best choice. Best in the case implies the highest value missed.