Which step in the Quadruped Reciprocal TS/ST Stability Test involves flexing the elbow to 90 degrees and externally rotating the arm into the cocking position?

• A. Step One: exhale to lower ribs down and in with the knees level.
• B. Step Three: raise the opposite arm off the surface.
• C. Step Six: Instruct the patient to flex the elbow to 90 degrees and externally rotate the arm into the cocking position.
• D. Step Five: turn the palm upward to the ceiling.

Answer: (C)