Ancient History question: The most remarkable feature of Harappan urban planning was:

The original question-specific evidence states: Harappan cities are famous for their advanced drainage system. Well-developed drainage system is the correct answer to “The most remarkable feature of Harappan urban planning was:”. This evidence connects the required Ancient History fact with its archaeological, geographical, cultural or chronological setting. Harappan evidence must be interpreted from excavated settlements, artefacts, environmental data and comparisons among sites; a single object should not automatically support a wider claim than the evidence permits. The choices Stone temples, Iron bridges and Huge pyramids do not satisfy the same combination of site, feature, river region, crop, craft, discovery, chronology or cultural association. A reliable check begins by identifying the question type: location, site feature, archaeological find, economic activity, urban planning, chronology or interpretation. Replaying that method confirms Well-developed drainage system as the keyed response for this Ancient History question.