Answer:
$5
Explanation:
Choices under consideration:
1. Spend $100 now
2. Putting $100 in a bank account that pays 5% interest.
Opportunity Cost for spending $100 now = Interest Earned from bank account
Opportunity Cost for spending $100 now = $100 x 5%
Opportunity Cost for spending $100 now = $5
So the opportunity cost for spending $100 now rather keeping that in a bank account that pays 5% interest is $5.