You have been asked to present a continuing education session on body mechanics and posture. In your presentation, you would advise the participants that proper posture is achieved when your:

A) Ears, shoulders, and feet are vertically aligned when sitting
B) Abdomen and buttocks are positioned slightly to the posterior when standing
C) Body weight is evenly distributed over the thoracic spine when sitting
D) Ears, shoulders, and hips are vertically aligned when standing

D) Ears, shoulders, and hips are vertically aligned when standing