Whom should a flight attendant contact for assistance with a very ill passenger onboard?

In situations where a passenger becomes very ill onboard, contacting a medical consultant is crucial. This option is designed to ensure that the flight attendant gets immediate access to professional medical advice and intervention that is specifically geared towards health emergencies. Medical consultants typically have the training and experience to assess serious health situations and provide instructions on what actions to take, which is vital for the safety and well-being of the passenger in distress.

While the other options may provide some level of support, they may not have the immediate medical expertise required in such urgent situations. The lead flight attendant could coordinate assistance or manage crew resources, but their role is not specifically focused on providing medical care. Customer service can handle a variety of issues but is not equipped to address medical emergencies effectively. Similarly, a flight supervisor can oversee operations but may not have the same level of medical training as a consultant. Therefore, utilizing the expertise of a medical consultant is the most direct and responsible course of action when dealing with a seriously ill passenger.