NEC Article _____ applies to electrical systems or equipment needed to aid the people responding to an emergency.

The choice of Article 701 in the National Electrical Code (NEC) is the correct answer because it specifically addresses the requirements for systems and equipment that are essential for emergency operations. This article outlines the necessary provisions for emergency systems that are intended to provide power for lighting, communication, or other critical operations during an emergency. These systems are crucial for ensuring safety and aiding first responders in effectively managing emergency situations.

While other articles focus on different aspects of electrical systems, Article 701 uniquely emphasizes the importance of having reliable power sources for life safety and emergency response scenarios. This distinction highlights the specific intent of this article to serve public safety by ensuring that necessary electrical components function during emergencies.