In which situation can the Election Commission order a repoll?

Correct answer: When there is a serious irregularity or disruption in voting at a polling station

Direct answer: A is correct. A repoll means that voting is conducted again at a particular polling station because the original poll may no longer be trusted. The Election Commission may order it when a serious irregularity, booth capturing, violence, tampering, impersonation on a large scale, or another major disruption affects the freedom and fairness of voting. The purpose is not to give a losing candidate another chance; it is to repair a damaged voting process. B is wrong because rain alone does not require a repoll if voting continues normally and voters can cast their votes. C is wrong because low turnout is not proof that the election was unfair; people may choose not to vote. D is wrong because losing is a normal election result, not evidence of misconduct. A useful memory cue is: repoll follows a seriously compromised poll, not an unpopular result or ordinary inconvenience.