The opportunity cost of Maria's purchase refers to what she gives up in order to buy the sun hat and the beach towel. If she chooses to buy the sun hat for $8.00 and the beach towel for $7.00, she spends a total of $15.00.
Given that she only has $20.00, she has $5.00 remaining. If she spends her money on the sun hat and towel, she cannot purchase anything else with that money.
The items she is giving up include:
- the magazines ($8.00)
- the bathing suit ($15.00)
Since she can only choose one of those items (since she only has $5 left after her purchase), the opportunity costs of her purchase would be:
- the magazines
- the bathing suit
Therefore, the correct responses are:
- the magazines
- the bathing suit