Which of the following is considered a safety hazard in the workplace?

Wet floors without warning signs are indeed considered a safety hazard in the workplace because they significantly increase the risk of slips and falls, which can lead to serious injuries. Ensuring that wet floors are marked with clear warning signs is crucial in alerting employees to the potential danger.

In contrast, a proper ergonomic setup promotes employee health and reduces strain, thus minimizing the risk of musculoskeletal injuries. Regular safety drills are designed to prepare employees for emergencies and improve safety awareness, while a well-maintained fire extinguisher is an essential safety equipment that can prevent potential fires from escalating. Each of these options contributes to a safer working environment, whereas unmarked wet floors pose an immediate hazard.