When Assessing a Patient with Chronic Obstructive Pulmonary Disease (COPD),the

When assessing a patient with chronic obstructive pulmonary disease (COPD) ,the nurse finds a new onset of agitation and confusion.Which action should the nurse take first?

A) Notify the health care provider.
B) Check pupils for reaction to light.
C) Attempt to calm and reorient the patient.
D) Assess oxygenation using pulse oximetry.