Final answer:
Hydrocortisone (Cortef) should be chosen for replacement therapy options for a patient with chronic adrenocortical insufficiency.
Step-by-step explanation:
The primary care provider should choose hydrocortisone (Cortef) for replacement therapy options for a patient with chronic adrenocortical insufficiency. Hydrocortisone is a glucocorticoid hormone that is structurally similar to cortisol, which is normally produced by the adrenal glands. It helps to replace the deficient cortisol and manage the symptoms of adrenal insufficiency.