Which protective measure is essential for personnel responding to chemical incidents?

Personal Protective Equipment (PPE) is critical for personnel responding to chemical incidents because it is specifically designed to protect individuals from hazardous substances and environments. PPE includes items such as gloves, protective clothing, respirators, goggles, and face shields, which help create a barrier between the responder and potentially harmful chemicals.

In the context of a chemical incident, the risks can include exposure to toxic gases, corrosive liquids, and other hazardous materials that may have serious health effects. Without proper PPE, responders can face immediate health threats, including skin burns, respiratory issues, and long-term health consequences.

The other options do not provide adequate protection against the dangers associated with chemical exposure. Casual clothing and standard hospital gowns lack the necessary protective features to guard against chemical hazards effectively. Face masks alone offer limited protection and do not cover the entire body or other exposed areas that may come into contact with hazardous materials. Therefore, PPE is the essential measure that ensures responders can perform their duties safely in such high-risk situations.