Final answer:
Enabling the continuous operation of critical government and business functions is defined as protecting the environment.
Step-by-step explanation:
Enabling the continuous operation of critical government and business functions is defined as protecting the environment. This can be achieved through measures such as implementing civil defense and emergency preparedness, anti-terrorism legislation, and ensuring the resilience of a critical national infrastructure. These actions help to maintain the stability and functionality of essential systems, such as power, communications, transportation, water, sanitation, and education systems.