Final answer:
The ED (Emergency Department) is not an appropriate referral for a patient with Sjogren's syndrome, as it deals with emergency situations and not routine management of chronic conditions like Sjogren's syndrome.
Step-by-step explanation:
The correct answer to which of the following is not an appropriate referral for a patient with Sjogren's syndrome is d. ED (Emergency Department). Sjogren's syndrome is a chronic autoimmune disease characterized by the dryness of the mouth and eyes due to the destruction of glands that produce saliva and tears. A dentist can help manage oral health issues, an ophthalmologist can address dry eye complications, and a rheumatologist specializes in autoimmune disorders including Sjogren's syndrome. However, the ED is not a routine referral for managing the chronic aspects of Sjogren's syndrome, as its function is to handle acute and emergency medical situations.