Assertion: The Harappan seal is possibly the most distinctive artefact of the Harappan or Indus Valley civilization.
Reason: We know a great deal about the lives of the Harappan people from seals alone.
Answer & explanation
Correct answer: option 3
The Harappan seal is possibly the most distinctive artifact of the Harappan or Indus Valley civilization. Made of a steatite stone, seals like this one often contain animal motifs and signs from a script that remains undeciphered. Yet we know a great deal about the lives of the people who lived in the region from what they left behind – their houses, pots, ornaments, tools, and seals – in other words, from archaeological evidence.
Thus, archaeological sources other than seals help us learn about the Indus Valley civilization. So, the reason given here is incorrect.