Why are rules imposed on election campaigning?

Correct answer: To keep campaigning fair and disciplined

Rules for election campaigning are intended to keep competition fair and responsible. They can regulate the timing and manner of campaigns, prevent appeals that create hatred or discrimination, restrict misuse of official resources, and discourage false or threatening conduct. Such rules help candidates compete on more equal terms and protect voters from improper pressure or unfair influence. They also support peaceful public discussion before voting.

The other options describe outcomes unrelated to campaign regulation. Campaign rules do not cancel polling, remove the voter list, or hide candidates. Their purpose is to set common standards that apply to participants and reduce advantages gained through misconduct. Therefore, option A is the best answer: rules keep campaigning fair and disciplined. The supplied explanation correctly mentions equal opportunity and reduction of unfair influence, so the supplied answer is accurate.