A gymnast is able to balance his body upside down even in the total darkness

A gymnast is able to balance his body upside down even in the total darkness because of :

(a) Vestibular apparatus
(b) Tectorial membrane
(c) Organ of corti
(d) Cochlea

Vestibular apparatus

Vestibular apparatus has specific receptors called crista and macula to maintain the balance and posture of body.

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