The verified response to “Ancient History question: Which river or river-region is associated with Harappa?” is Ravi, option B. The original question-specific evidence states: Harappa is associated with the Ravi region. Ravi is the correct answer to “Which river or river-region is associated with Harappa”. This evidence connects the required Ancient History fact with its archaeological, geographical, cultural or chronological setting. The choices Ghaggar-Hakra plain, Bhogava and Mansar-Manhar system do not satisfy the same combination of site, feature, river region, crop, craft, discovery, chronology or cultural association. Replaying that method confirms Ravi as the keyed response for this Ancient History question.