What regulation outlines the physical readiness training (PRT) guidelines?

The correct choice is based on the fact that FM 7-22, which stands for Field Manual 7-22, specifically provides comprehensive guidance on physical readiness training (PRT). This manual details the principles, techniques, and methodologies needed to effectively prepare soldiers for the physical demands of combat and other military duties. It emphasizes the importance of developing physical fitness and how it contributes to overall soldier readiness.

FM 7-22 is essential for creating structured PRT programs that are adaptable to various environments and physical conditions, ensuring soldiers maintain operational effectiveness. It covers the components of fitness, appropriate exercises, nutrition, and injury prevention, thereby serving as a key reference for leaders and soldiers in physical training.

While other regulations like AR 600-20 and AR 350-1 address broader aspects of readiness and training management, they do not specifically focus on the comprehensive physical training regimen that FM 7-22 provides. Similarly, FM 3-22.20 primarily discusses the Army's Marksmanship Program rather than physical readiness training, further validating that FM 7-22 is the primary source for PRT guidelines.