Final answer:
Option (D), The essential elements for setting up an Intra-Aortic Balloon Pump (IABP) include EKG leads, heparin for anticoagulation, arterial blood pressure monitoring, and an electric console, but a gas reservoir is not required.
Step-by-step explanation:
The student's question relates to the components necessary for setting up an Intra-Aortic Balloon Pump (IABP). Among the options provided, all are essential except for a gas reservoir, which is not a standard requirement for setting up an IABP. EKG leads are required for monitoring the heart rhythm, heparin may be used for anticoagulation to prevent blood clots, arterial blood pressure monitoring is crucial for assessing the patient's hemodynamic status, and an electric console is necessary to control the IABP device. However, a gas reservoir is not a standard component in the setup of an IABP.