01 Around when did the decline of Mature Harappan cities begin?
Answer and explanation
Correct answer: A. After 1900 BCE
Explanation: The governing chronological concept is the transition after the Mature Harappan phase. Evidence from several sites indicates that the decline of many major urban centres began around or after 1900 BCE, although the process was regionally varied and did not mean that all settlements suddenly disappeared. Therefore, option A is correct; the other dates belong to periods far earlier or much later than the Harappan decline.