**Step-by-step Solution:** **Step 1: Understand the concept of opportunity cost.** Opportunity cost is the value of the next best alternative forgone when making a decision. In economics, individuals should specialize in the task for which they have the lowest opportunity cost (comparative advantage). **Step 2: Identify each person’s skill and potential specialization.** - Tanisha: Better at managing long-term investments - Raheem: More skilled at day-to-day budgeting and tracking expenses **Step 3: Apply the opportunity cost principle.** If Raheem specializes in budgeting/tracking expenses, his opportunity cost (what he gives up) is less than if Tanisha did that job, because Raheem is more efficient/skilled at it. If Tanisha did the budgeting, it would take her more time/effort, and she would have to give up more valuable investment management time, where she has higher skill. **Step 4: Explanation in terms of opportunity cost.** Raheem should specialize in day-to-day budgeting because his opportunity cost is lower—he is more efficient at that task, so he gives up less to do it, compared to Tanisha. If Tanisha did it, her opportunity cost would be higher because she would have to give up more valuable time managing investments (where she is more skilled). **Step 5: Final Answer** **Raheem should specialize in day-to-day budgeting and tracking household expenses because his opportunity cost of performing this task is lower than Tanisha’s. This is because Raheem is more skilled and efficient at this task, so he sacrifices less than Tanisha would by specializing in it, allowing both to maximize the household’s overall productivity.** **Summary Table:** | Task | Who should do it | Why (opportunity cost) | |-----------------------------|------------------|----------------------------------------------------| | Long-term investments | Tanisha | Lower opportunity cost, higher skill | | Day-to-day budgeting/expenses| Raheem | Lower opportunity cost, higher skill | **Key Principle:** Each person should specialize in the task where their opportunity cost is lowest (comparative advantage).