Ancient History question: Which statement about the Harappan Civilization is false?

The original question-specific evidence states: The Harappans did not use iron; they belonged to the Bronze Age. They knew iron is the correct answer to “Which statement about the Harappan Civilization is false”. 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 Mother Goddess worship is suggested, Trade was developed and They had urban drainage 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 They knew iron as the keyed response for this Ancient History question.