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