Answer:
The relevant accounting costs are those that differ in the future, but depend on a decision, in this case the airline can change the decision.
Step-by-step explanation: therefore the cost of the family ticket, which is offered to carry out marketing of the airline, assuming that the entrepreneurs are the ones who would have more resources to buy tickets for being a target market, the company chooses to give these tickets to carry out the marketing, however, an eligible decision that may change in the future