Correct option is A
The correct passive voice of the sentence is
(a) He will be elected as director by the shareholders.
Rules for Active to Passive Conversion:
· Identify the object in the active voice sentence (“him” here).
· Make the object the subject in the passive sentence.
· Use the auxiliary verb + past participle of the main verb.
· Add the doer of the action preceded by “by” (if necessary).
Structure:
·
Active Voice: Subject + will + verb (elect) + object
·
Passive Voice: Object + will be + past participle (elected) + by + subject
Example:
· Active: "They will deliver the package tomorrow."
· Passive: "The package will be delivered tomorrow by them."