The nurse is preparing a female client with Addison's disease for self-care afi.4 discharge. Which is the pathophysiological basis to support the need for the client to carry a cortisol kit at all times?

The drug may be needed to treat a sudden systemic allergic reaction.

Hypertensive crisis requires immediate treatment to prevent a stroke.

Hyperglycemia may require cortisol to lower the blood glucose level.

Stress increases the body's need for additional replacement hormone.