Which action of extra-ocular muscle is spared in involvement of Occulomotor nerve -
Abduction
Depression
Elevation
Adduction
In third nerve palsy, out of three abductors two are spared, i.e., lateral rectus and superior ablique. Therfore, abduction is best preserved in 3rd nerve palsy.
Some, intorsion & depression is also maintained. But the best answer here is abduction.