WORLD CIVILIZATION

Detailed explanation-1: -Most of the seals were made of steatite, which is a kind of soft stone. A few of them were also made of terracotta, gold, agate, chert, ivory and faience. The standard Harappan seal was square in shape with a 2X2 dimension. It is believed that the seals were used for commercial purposes.

Detailed explanation-2: -Seals were used to make a sealing, or positive imprint, like this modern resin one made from the original seal. Sealings were used in ancient times for trade. They would be made on ceramics or the clay tags used to seal the rope around bundles of goods.

Detailed explanation-3: -The correct answer is Steatite. Harappan seals were made mostly of Steatite.

Detailed explanation-4: -The Harappan seal is possibly the most distinctive artefact of the Harappan or Indus Valley Civilisation. They are made of a stone called steatite, seals often contain animal motifs and signs from a script that remains undeciphered.