Final answer:
To accomplish the PRT mission, NCOs must lead by example, communicate effectively, and train and mentor junior soldiers, which encompasses all the listed options (1 to 4).
Step-by-step explanation:
To accomplish the PRT mission, Non-Commissioned Officers (NCOs) must perform a combination of leadership, communication, and teaching roles. They are expected to lead by example and set high standards for their subordinates, which is a fundamental tenet of military leadership and ensures that soldiers understand and strive to meet the expectations of their unit. Additionally, NCOs must communicate effectively with subordinates and superiors to maintain a clear chain of command and ensure that all members of the unit are aware of their responsibilities and the objectives of the mission. An essential part of their role also includes the responsibility to train and mentor junior soldiers, guiding them through the transformation from civilian to military life and providing them with the skills and knowledge necessary to succeed within the military structure. All of these aspects combined define the comprehensive approach that NCOs must adopt to effectively achieve the PRT mission.