What is the primary responsibility of cabin crew in relation to non-life-threatening situations?

The primary responsibility of cabin crew in relation to non-life-threatening situations is to handle most non-life-threatening situations. This includes addressing issues that arise during a flight that do not pose an immediate risk to life or safety. For example, cabin crew members are trained to manage conflicts between passengers, assist with passenger comfort, and resolve minor medical situations that do not require advanced medical training.

In contrast, performing emergency landings and providing advanced medical assistance are typically within the purview of pilots and specially trained medical personnel. Managing passenger security checks is usually the responsibility of ground security personnel or law enforcement, not cabin crew. Therefore, handling most non-life-threatening situations is the most appropriate description of the cabin crew's responsibilities.