What type of protection do proximity suits and entry suits provide?

Answer: C — Thermal

Proximity suits and entry suits are specifically designed to protect users in high-heat environments and during firefighting operations. The primary focus of these suits is to provide thermal protection, which is essential in situations where there are extreme temperatures. These suits are constructed from materials that reflect heat and minimize thermal conduction, allowing firefighters to operate in close proximity to flames and other heat sources without suffering from burns or heat-related injuries. The design of these suits often includes multiple layers, providing insulation and shielding from the heat, while also allowing for some level of movement and dexterity necessary for the tasks performed in such hazardous environments. While these suits can offer limited protection from chemicals or biological hazards, their main function is clearly centered around thermal protection, making them ideal for environments where heat is a significant risk.