Out of the given alternatives given choose the most appropriate option.
If they ___________ next to each other on the plane, they wouldn't have got married.

Correct option is D

The correct option to fill in the blank is (d) hadn't sat.
• Explanation:
– The sentence is a third conditional expressing a hypothetical situation in the past and its consequence.
– The structure is: If + past perfect, would have + past participle.
• Grammatical rule used:
– Use third conditional to talk about unreal past situations and their imagined results:
→ If + had + V3, then would have + V3.
• Explanation in Hindi:
– Third Conditional का प्रयोग तब होता है जब हम किसी भूतकालीन असली घटना के विपरीत कल्पना करते हैं।
• Example:
– If he had studied, he would have passed the test. ✅
Meanings of the other options:
• (a) sat ❌
– English: Simple past – doesn’t fit third conditional.
– Hindi: बैठे
• (b) didn't sit ❌
– English: Past simple negative – incorrect for this structure.
– Hindi: नहीं बैठे
• (c) had sat ❌
– English: Past perfect affirmative – doesn’t match negative structure.
– Hindi: बैठे थे