Final answer:
c) National Fire Protection Association (NFPA). The National Fire Protection Association (NFPA) has released an alert to prevent injuries and deaths of firefighters due to truss system failures.
Step-by-step explanation:
The correct answer is c) National Fire Protection Association (NFPA). The NFPA has released an alert (Publication No 2005-1432) to help prevent injuries and deaths of firefighters due to truss system failures.