Final answer:
The primary treatment for acute labyrinthitis is rest and antiemetics to alleviate symptoms of nausea and vertigo. Other options such as avoidance of caffeine and alcohol or more invasive treatments are not standard for initial management.
Step-by-step explanation:
The treatment of choice for a patient with acute labyrinthitis is rest and antiemetics. Labyrinthitis is an inner ear disorder that causes vertigo, hearing loss, and can even affect balance. During an acute attack, it's important to reduce the symptoms of nausea and potential vomiting which is why option D, Rest and antiemetics, is typically recommended. Avoidance of caffeine and alcohol can be helpful but is not the primary treatment. Thiazide diuretics and endolymphatic surgery are not standard treatments for acute labyrinthitis unless specific underlying conditions call for such measures.