What symbolizes or confirms the Harappan Civilization's contact with distant lands?
1. Traces of Harappan artifacts in present Saudi Arabia.
2. A distinctive type of vessel, a large Harappan jar coated with a thick layer of black clay has been found at Omani sites.
3. Mesopotamian texts.
4. Harappan Seals.
1. 1, 2, and 3 only
2. 2, 3, and 4 only
3. 1, 2, 3 and 4
4. 1, 3 and 4