GMAT Sentence Correction (SC) | Re: The law demands that a driver

a, passes an eyesight test before obtaining a license irrespective of whether the driver wears corrective lenses - Incorrect - The verb in subjunctive usage must be in plural
b, passing an eyesight test before obtaining a license irrespective of whether the driver wears corrective lenses - Incorrect
c, pass an eyesight test before obtaining a license irrespective of whether the driver wears corrective lenses - Correct and concise
d, pass an eyesight test before obtaining a license irrespective
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