Final answer:
Monopolar mode does not require a patient return electrode. Electrical current flows from the active electrode to the patient's body and returns through the dispersive pad. Therefore correct answer is option D.
Step-by-step explanation:
In the realm of electrosurgery, the monopolar mode stands distinct as it eliminates the necessity for a patient return electrode. This mode employs a single active electrode, often resembling a metal scalpel, paired with a dispersive electrode pad strategically positioned on the patient's body. The operational principle involves the directional flow of electrical current from the active electrode into the patient's body, subsequently completing the circuit by returning through the dispersive pad to the generator.
Remarkably, this configuration obviates the requirement for a dedicated return electrode. Monopolar electrosurgery's efficacy lies in its streamlined and efficient circuitry, exemplifying a judicious utilization of electrical energy for precise medical interventions. This mode exemplifies a sophisticated integration of technology and safety measures, contributing to the advancement of surgical procedures by mitigating the need for a separate return electrode, thus enhancing procedural simplicity and patient welfare.