What should a pilot do if a passenger refuses to use their shoulder harness due to discomfort?

The correct response is to explain that using a shoulder harness is a mandatory requirement. Safety regulations are in place for a reason, and the shoulder harness is a critical safety feature designed to protect both the passengers and the crew during flight. By emphasizing its mandatory nature, the pilot reinforces the importance of the harness in ensuring safety and compliance with aviation regulations.

Engaging with the passenger about the importance of safety can help in communicating that the requirement is not just a suggestion but a legal obligation that must be adhered to. This action upholds the integrity of safety standards and prioritizes the well-being of everyone on board.

The other options, such as allowing the passenger to fly without the harness or simply suggesting alternatives, could jeopardize safety. Advising the passenger to wear the harness only during flight doesn’t address the issue that the harness must be worn throughout the entire flight, as it is designed to function as a continuous safety measure.