What was the use of seals in the Harappan Civilization?

The correct answer is Option 1 - Seals were used for long-distance communications and transporting goods.

Seals and sealings were used to facilitate long-distance communication. Imagine a bag of goods being sent from one place to another. Its mouth was tied with rope and on the knot was affixed some wet clay on which one or more seals were pressed, leaving an impression. If the bag reached with its sealing intact, it meant that it had not been tampered with. The sealing also conveyed the identity of the sender