Final answer:
An appropriate body stance when addressing clients is an open and confident stance.
Step-by-step explanation:
The appropriate body stance when addressing clients would be Option 2: B. Open and confident stance. This stance involves a standing position facing the observer with upper limbs extended out at a ninety-degree angle from the torso and lower limbs in a wide stance with feet pointing laterally. This posture conveys confidence and openness, which are important qualities when interacting with clients.