Final answer:
The robotic arm should be positioned on the O.R. table after patient positioning to ensure optimal access to the surgical site and patient safety. It is also important to confirm antibiotic administration and patient imaging before the surgery begins.
Step-by-step explanation:
The correct time to position the robotic arm on the Operating Room (O.R.) table is B) After Patient Positioning. This is crucial to ensure that the placement of the robotic arm does not interfere with patient positioning and comfort and is positioned in a way that provides optimal access to the surgical site. Before the robotic arm is positioned, it is also important to confirm that prophylactic antibiotics have been administered within 60 minutes before the incision is made or to confirm that antibiotics are not indicated for the procedure. Additionally, it is essential to confirm that all necessary imaging results for the correct patient are displayed in the O.R. to assist with the surgical procedure.