Which personal protective equipment is least likely to prevent infection during rescue operations?

The selection of footwear as the least likely personal protective equipment to prevent infection during rescue operations is based on its primary function. Footwear generally serves to protect the feet from physical injuries, such as cuts or impacts, rather than providing a barrier against pathogens or bodily fluids that might carry infections.

In contrast, the other options fulfill specific roles in infection prevention. Disposable gloves create a protective barrier that minimizes direct contact with contaminants, which is essential in situations where blood or bodily fluids may be present. A barrier (CPR) mask is designed to protect both the rescuer and the victim during mouth-to-mouth resuscitation, effectively reducing the risk of transmitting infections through respiratory droplets or fluids. Protective eyewear helps shield the eyes from splashes that may contain infectious material, further enhancing the rescuer's safety.

Thus, while footwear is important for overall safety and comfort, it does not contribute significantly to infection control during rescue operations, leading to the conclusion that it is the least effective in preventing infection compared to the other pieces of equipment listed.