ক. will help the distressed people
খ. would help the distressed people ✔
গ. would have helped the distressed people
ঘ. would have been helped the distressed people
ব্যাখ্যা: had' এখানে মূল verb (Past Indefinite), তাই এটি Second Conditional। ফলে Main clause---এ 'would + base verb' (would help) বসবে।
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