How should badges be worn on the Army uniform?

The correct answer provides a clear directive from official regulations. Badges should be worn according to the specific guidelines outlined in AR 670-1, which governs the wear and appearance of Army uniforms. This regulation establishes standardized practices for the placement and wear of insignia, ensuring uniformity across the force.

Following these guidelines is crucial as it helps maintain a professional appearance and fosters esprit de corps among Soldiers. Recognizing that badges have designated locations on the uniform reinforces the Army's commitment to discipline and order. This uniformity also aids in promoting recognition of achievements and qualifications while accurately reflecting rank and experience.

The other options suggest a level of personal choice or vagueness that would undermine the professionalism expected in military attire and the adherence to established standards.