He stopped his car — when the light turned red.

✅ কেন সঠিক: ‘Abruptly’ means suddenly and unexpectedly, which fits stopping a car when the light turns red.

❌ অন্য অপশন: ‘Equitably’ means fairly; ‘ambiguously’ means unclearly; ‘incisively’ means sharply and clearly (of thought or speech).

💡 মনে রাখুন: abrupt = sudden; an abrupt stop, an abrupt change.