Teaching for a new staff nurse has been effective when the new nurse performs which action while caring for a patient with hemodynamic monitoring?

Ensures that the patient must be lying supine with the head of the bed flat for all readings.

Positions the limb with the catheter insertion site at zero reference of the stopcock line.

Positions the zero-reference stopcock level with the phlebostatic axis.

Balances and calibrates the hemodynamic monitoring equipment every hour.