What Army Regulation addresses enlisted promotions and reductions?

The correct choice addresses the processes and policies related to the promotion and reduction of enlisted members within the Army. Specifically, this regulation outlines eligibility criteria, procedures for promotion boards, and standards for maintaining and promoting performance. The focus on enlisted ranks means it directly correlates to all matters concerning the advancement and demotion of soldiers, making it a crucial reference for promotion board preparations and decisions regarding soldier advancement.

Other regulations address different areas; for example, one might cover weight control, another could pertain to military discipline and conduct, and yet another focuses on uniform regulations. Therefore, while these regulations serve important functions, they do not specifically deal with the intricacies of enlisted promotions and reductions as the selected regulation does.