Final answer:
The costs relevant to your decision are the expenses or sacrifices associated with each alternative.
Step-by-step explanation:
The costs relevant to your decision are the expenses or sacrifices associated with each alternative. In this case, the costs would include:
- The cost of going out to visit your friends, which could include transportation costs, expenses for food or activities, and the time spent away from other tasks.
- The cost of staying in your room and watching TV, which could include the opportunity cost of not studying economics or spending time with friends.
- The cost of studying economics, which could include the time and effort spent on studying instead of engaging in other activities.
- The cost of having your friends over to your room, which could include the expenses for food or entertainment, and the time spent hosting and cleaning up.
- The cost of going to bed early, which could include the missed opportunity to spend time with friends or engage in leisure activities.