The motor nerve that innervates the external posterior rectus muscles of eye is
1. trigeminal
​2. occulomotor
3. abducens
​4. facial

Dear Student.
Please find below the solution to the asked query.

The correct answer is 2. Oculomotor. 
Oculomotor nerve supplies all sort of motor input to external muscle of the eye, excluding lateral rectus and superior oblique.

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