Which Air Force Instruction governs Dress and Personal Appearance?

The correct answer is AFI 36-2903, as it specifically outlines the standards for dress and personal appearance in the Air Force. This instruction provides detailed guidelines regarding the proper wear of uniforms, grooming standards, and overall personal presentation for Air Force members. It emphasizes the importance of maintaining a professional appearance that reflects the values and standards of the Air Force.

In contrast, the other options pertain to different areas within Air Force regulations. For example, AFI 36-2901 relates to the physical fitness program and standards, AFI 36-4950 covers the Air Force's Interim Medical Disqualification Process, and AFM 36-2203 focuses on training and development. Each of these instructions addresses their specific areas, thereby reinforcing the importance of understanding which regulations apply to which topics in military life.