Correct Response: B

The lack of necessary supplies and equipment to adequately and safely care for patients is an example of a system variance.

A variance is defined as a deviation that leads to a quality defect or problem. Variances can be classified as a practitioner variance, a system/institutional variance, a patient variance, a random variance and a specific variance.

A sentinel event is defined as is an event or occurrence, incident or accident that has led to or may possibly lead to client harm. Adverse effects are serious and unanticipated responses to interventions and treatments, including things like medications.