Final answer:
The correct reference for the standards an ISO must meet for the role of Fire Officer 1 is NFPA 1021, which outlines the job performance requirements for a fire officer.
Step-by-step explanation:
The student's question refers to the standards that an Incident Safety Officer (ISO) should meet, specifically related to the rank of Fire Officer 1. The National Fire Protection Association (NFPA) has various standards for different aspects of firefighting, and the standard NFPA 1021 refers to the professional qualifications for fire officers. An ISO should be familiar with NFPA 1021 as it outlines the job performance requirements for a fire officer, which includes ensuring safety at incident scenes.
NFPA hazard diamonds, as mentioned, are used to summarize the major hazards of a chemical substance, providing valuable information for safety officers in an emergency. Although this is not directly connected with the NFPA standard mentioned in the question, it illustrates the types of safety considerations a fire officer must understand, which are part of the broader NFPA codes and standards they must know.