Final answer:
The correct neckwear for a non-formal dinner dress blue uniform is a black bow tie for males and a neck tab for females, which aligns with military evening dress protocol.
Step-by-step explanation:
When personnel wear the non-formal dinner dress blue uniform, the neckwear for males is a black bow tie, and for females, it is a neck tab. Therefore, the correct answer to this question is c) Bow tie for males, neck tab for females. The dinner dress uniforms are part of military protocol and are worn at official functions that call for evening dress codes. The male uniform is typically paired with a black bow tie which complements the formal look, while females wear a neck tab as part of their uniform ensemble.