Final answer:
The NFPA standard that defines safe training practices and programs is A. 1403.
Step-by-step explanation:
The NFPA standard that defines safe training practices and programs is A. 1403.
NFPA stands for the National Fire Protection Association, an organization that develops and publishes codes and standards related to fire safety. NFPA Standard 1403 specifically focuses on the safety requirements for live fire training evolutions, including things like fire behavior, equipment, and instructor qualifications.
The hazard diamond mentioned in the reference is a separate concept and not directly related to NFPA Standard 1403.