What are two theories archaeologists have explained as to why the ancient harappans disappeared

Artifacts found at Mohenjodaro and Harappa show that the religion of the early cities was later absorbed into the religion of Hinduism. So the correct option for the given question is option "B". The Harappa and the Mohenjodaro civilization were also known as the Indus Valley Civilization. The people of this civilization developed new techniques to create artifacts out of metals and muds. Mud bricks was highly prevalent during this civilization and were used for making brick houses. Seal carving was also developed during this period.