Answer: d. sell the ticket because the marginal benefit exceeds the marginal cost.
Step-by-step explanation:
The marginal benefits exceed the marginal costs in this scenario as the marginal benefit if $300 and the marginal cost is $200.
The company should therefore sell the ticket as they would be making a net marginal benefit of $100. Were it the other way around and the marginal cost was larger, the company should not sell because they would be making a marginal loss.