Why is NFPA 1670 considered general in its contents?

NFPA 1670 is recognized for its generality because it provides a framework that acknowledges the diverse needs and operational capabilities of various fire departments and rescue organizations. This flexibility enables departments to tailor their rescue operations based on local resources, environments, and specific response scenarios they may face. By not being prescriptive in nature, NFPA 1670 allows different organizations to adapt the guidelines to fit their unique circumstances while still adhering to safety and operational standards. This adaptability is crucial in emergency response, where conditions can vary widely between urban, suburban, and rural settings, and across different types of incidents.

The other options don't capture the essence of NFPA 1670’s flexible approach. The emphasis is not only on theoretical guidelines, nor is it exclusively focused on urban scenarios, and while safety is paramount in the guidelines, the broader ability for different implementations across various rescue operations is the central factor that characterizes its generality.