The two general categories of technical rescue disciplines identified in NFPA 1006 are:

• A. Urban rescues and wilderness rescues.
• B. Surface rescues and underwater rescues.
• C. Land-based rescues and water-based rescues.
• D. Structural rescues and water rescues.

Answer: (C)

The main idea is that NFPA 1006 groups technical rescue into two broad environments where different skills and gear are needed: land-based rescues and water-based rescues. This split reflects the distinct hazards, techniques, and equipment used in each setting. On land, rescuers rely on rope systems, stabilization, and access in structures or rugged terrain, along with PPE suited for those environments. On the water side, rescues involve currents, buoyancy considerations, cold exposure, and water-specific gear for swiftwater, ice, or diving operations. Framing the disciplines this way helps tailor training and qualifications to the exact conditions responders will face. The other options try to separate rescues by context or by a subset of water rescues, but they don’t align with the standard NFPA division into land-based versus water-based disciplines.