A.Tammy's little sister starts visiting online chat rooms to make friends
Answer:
e. Sunk cost.
Explanation:
As per the given statement, the best appropriate option is sunk cost. As the sunk cost deals with the past cost which is already incurred in the past and it cannot be changed or avoided, neither it can be recovered. Example - Rent expense.
Plus it does not affect the future decisions that means it is irrelevant for decision-making aspects.
Setting your priorities could be a primary third desicion when it comes to making financial decisions.