Which of the following is a key component of a first aid kit on an aircraft?

A key component of a first aid kit on an aircraft is adhesive bandages of various sizes. These bandages are essential for treating minor cuts and abrasions, which can occur in the confined space of an aircraft, whether from luggage handling, passenger interactions, or other incidental injuries.

Adhesive bandages come in different sizes to cater to various types of wounds and can provide protection, promote healing, and help prevent infection. Having a variety ensures that crew members can address different injuries effectively and provide immediate care to passengers.

While instant cold packs, a first aid manual, and gauze pads can be valuable components of a first aid kit, they serve more specialized purposes. Instant cold packs are useful for reducing swelling or numbness from sprains and strains but are not universally applicable for all injuries. A first aid manual is critical for guidance but does not offer direct treatment itself. Gauze pads are important for covering larger wounds or for controlling bleeding, but without the versatility and immediate applicability of adhesive bandages for everyday minor injuries, they are not the most critical component.