Which ADP/ADRP document addresses the topic of protection?

ADP 3-37 is the correct choice as it specifically addresses the concept of protection in the context of Army operations. This document outlines the Army's approach to protecting personnel, resources, information, and the environment during operations, emphasizing the importance of safeguarding against threats while conducting missions. It details the principles and elements of protection, including how they integrate into overall operational planning and execution.

The emphasis on protection in ADP 3-37 is particularly relevant for maintaining operational effectiveness and ensuring the safety of forces, which is a fundamental aspect of military strategy. Understanding this document enables soldiers and leaders to apply the principles of protection effectively, ensuring that they can mitigate risks and enhance the survivability of their units in various operational environments.