National board of fire service professional qualifications accredits.

• A. ISO standards
• B. ANSI standards
• C. NFPA standards
• D. ASTM standards

Answer: (C)

The main idea here is that the National Board on Fire Service Professional Qualifications uses NFPA standards as the official framework for evaluating and certifying fire service personnel. NFPA develops widely adopted standards for firefighter and officer qualifications, detailing the job performance requirements, testing methods, and competency criteria that departments use to ensure consistent and nationally recognized standards. The National Board reviews and accredits these NFPA standards, which is why NFPA standards are the ones associated with this accrediting body.

Other standard-setting bodies exist, like ISO and ASTM, but they operate in other domains and contexts. ANSI is an accreditor for standards developers, not the specific fire-service qualification standards the board endorses. So the standards most directly accredited by the National Board in this fire-service qualification context are the NFPA standards.