The sources of revenue for Panchayats in Assam include:

The correct answer is: d) All of the above.

Panchayats in Assam have a number of sources of revenue, including:

• Taxes and fees: Panchayats can levy taxes and fees on a variety of items, including property, vehicles, and businesses.
• Grants from state and central government: The state and central government provide grants to panchayats to support their activities.
• Own income-generating activities: Panchayats can generate their own income through activities such as running markets, leasing land, and charging for services.

These sources of revenue are used to fund a variety of panchayat activities, including:

• Providing basic services such as water, sanitation, and electricity
• Maintaining roads and other infrastructure
• Promoting economic development
• Providing social welfare programs

Panchayats in Assam play an important role in the delivery of basic services and the development of their communities. The sources of revenue available to panchayats are essential to their ability to carry out these functions.