Which type of gear is worn to mitigate exposure to hazardous materials?

The correct choice is Level A or B personal protective equipment because these categories of gear are specifically designed to provide a high level of protection against hazardous materials. Level A gear offers the highest degree of protection, including a fully encapsulating suit, while Level B provides significant protection for the skin and respiratory system but does not include a full encapsulation. These types of equipment are crucial when responders may encounter chemical, biological, radiological, or explosive hazards, ensuring that they can work in environments that may contain harmful substances without risking their health.

The other gear types listed do not offer the same level of protection needed for hazardous material exposure. Standard firefighting gear is tailored to address heat and flames rather than chemical exposure. Lightweight uniforms are designed for comfort and range of motion, not for hazardous environments. Basic first-aid kits are essential for treating injuries but do not provide protection from hazardous exposures. This distinction highlights the importance of using the appropriate personal protective equipment in situations where hazardous materials are present.