Harappan age is
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 2,500 BC-1,750 BC
The Harappan (Indus Valley) Civilisation is dated by its mature phase, the time of planned cities such as Harappa, Mohenjo-daro, Kalibangan and Lothal. Radiocarbon dating puts this phase at about 2500 BC to 1750 BC, the dates usually given in school textbooks.
Before 2500 BC lies the Early Harappan phase of villages and small towns, and after about 1750 BC the cities declined into the Late Harappan cultures.