What is the NAVADMIN number for the Navy Uniform Policy and Uniform Initiative Update?

The correct choice is based on the specific NAVADMIN that officially addresses updates to the Navy Uniform Policy and introduces uniform initiatives. NAVADMIN 163/18 outlines significant changes and clarifications regarding navy uniforms, including guidance on new uniform items, wear and appearance standards, and updates to policies that affect sailors' uniforms. This NAVADMIN serves as an important document for sailors to reference for understanding the standards and expectations surrounding their dress.

Other options represent different NAVADMINs that do not pertain to the uniform policy update. Therefore, they do not provide the relevant information regarding uniform initiatives, making them less applicable to the question at hand. Understanding this context highlights why NAVADMIN 163/18 is the appropriate response.