This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
Which of the following is TRUE about stapedial reflex? 
Select and explain. 
A. Involves a spinal reflex, B. Invariably the first manifestation of Meniere's disease, C. Protects from loud noises, D. Is a polysynaptic reflex
C: Protects from loud noises
Answer: C: Protects from loud noises 
Explanation: Stapedial reflex - A loud noise is put in either the ipsilateral or contralateral ear and the reflex causes the stapedius tendon to contract suddenly. This may be seen on tympanometry as a flick and is evidence of a functioning VII nerve down to this branch. Absence of the reflex may be result of many other disorders (eg. Hearing) as well as VII nerve lesion.