Answer:
Implicit cost
Step-by-step explanation:
Implicit costs are referred as the opportunity costs that are associated with the selection of a particular activity. Opportunity costs are defined as the benefits that are foregone or sacrificed for selecting some other alternative.
In our case, Bubba is choosing shrimp fisherman over the other alternative of working as a fishing tour guide where he could earn an income $5,000. Hence, the amount of money income foregone from working as a fishing tour guide is the implicit cost in this case.