The purpose of many megalithic structures in Assam remains:

The correct answer is: c) Shrouded in mystery.

Megalithic structures are prehistoric monuments made of large stones. They are found all over the world, but they are particularly common in Assam, India. The purpose of these structures is still unknown, but there are many theories about what they may have been used for. Some people believe that they were used as tombs, while others believe that they were used for religious ceremonies or astronomical observations.

There is no one definitive answer to the question of what megalithic structures were used for. However, the mystery surrounding their purpose only adds to their fascination.

Here is