The experienced nurse precepts a graduate nurse in the intensive care unit. Which action by the graduate nurse requires immediate intervention by the experienced nurse?

Aligning the zero-reference stopcock with the phlebostatic axis.

Inflating the balloon on the pulmonary artery catheter using a new 10 mL syringe

Obtaining an arterial blood sample from the right radial arterial line.

Administering intravenous furosemide through the distal lumen of the right subclavian central line