Final answer:
Option (c), Bearing is the leadership trait that denotes impeccable personal appearance, as it includes maintaining a professional demeanor, dressing appropriately, and exuding confidence.
Step-by-step explanation:
The leadership trait that involves impeccable personal appearance is bearing. Bearing refers to the way one conducts and carries oneself, often reflecting self-discipline and a certain presence or command.
This trait is a component of military and corporate leadership frameworks and is essential for making strong first impressions and conveying authority. Examples of bearing include maintaining a professional demeanor, dressing appropriately for different occasions, and exuding confidence.