What items must be confirmed at the overwing window exit of a 737-700?

The correct choice highlights the importance of ensuring that safety equipment is properly maintained and accessible for emergency situations. At the overwing window exit of a 737-700, it is crucial to confirm the presence and status of the escape strap and exit handle cover.

The escape strap is essential for aiding passengers in evacuating the aircraft safely, particularly in the event of an emergency where rapid exit is necessary. Ensuring the escape strap is in good condition and readily available helps guarantee that flight attendants can assist passengers efficiently. The exit handle cover, on the other hand, protects the exit handle from being accidentally engaged during normal operations and ensures that it is ready for use when needed.

In contrast, items such as crew life vests and seatbelts, safety straps and cabin secure, or oxygen masks and life vests may pertain to other parts of the aircraft or different safety protocols but are not specifically the focus at the overwing window exit. Each exit has its unique set of checks to ensure optimal safety, highlighting the significance of thorough training in operational protocols.