Explanation:

- The Public Affairs Centre (PAC) is an organization heavily involved in action research aimed at furthering the Sustainable Development Goals within India.

- PAC focuses on various societal issues and aims to promote transparency, accountability, and good governance.

- It has a significant influence on policy-making in India through sustainable development practices.

Options:

1. New Delhi: Known as India's capital, it's a significant hub for national organizations but not the location of PAC.

2. Bengaluru: Correct answer. This progressive city is a major center for technology and research and serves as PAC's home.

3. Mumbai: A bustling financial capital but not linked to PAC's main office.

4. Kolkata: It has a rich cultural history but is not related to PAC.

5. Chennai: While also a significant city in India, it is not where PAC is based.