Riverbanks in Tamil Nadu are often sites for:

The correct answer is: d) All of the above

Riverbanks in Tamil Nadu are often sites for cremation grounds, pilgrimage routes, fairs and cultural events.

• Cremation grounds: Riverbanks are often used as cremation grounds because they are considered to be sacred and holy places. The ashes of the deceased are often scattered in the river, which is believed to help the soul reach the afterlife.
• Pilgrimage routes: Many rivers in Tamil Nadu are also important pilgrimage routes. Hindus believe that bathing in certain rivers can cleanse them of their sins and help them achieve moksha, or liberation from the cycle of rebirth.
• Fairs and cultural events: Riverbanks are also popular sites for fairs and cultural events. These events often feature traditional music, dance, and food. They are a great way for people to come together and celebrate their culture.

In addition to these, riverbanks are also important for the environment. They provide a habitat for many different plants and animals, and they help to regulate the flow of water.