Jus. P.N. Bhagavati is known as the father of Public Interest Litigation (PIL) in India. He was a former judge of the Supreme Court of India and made landmark contributions to the judicial system in the area of PIL. He was instrumental in making the court more accessible to the general public, enabling the less privileged to approach the court for seeking justice on public issues. He famously encouraged the use of PIL to address social, environmental, and economic issues affecting the public at large.
The other judges mentioned:
- Jus. H.R. Khanna was an eminent judge but is more famously known for his dissenting judgment in the Emergency case (Kehar Singh v. Union of India) rather than PIL.
- Jus. V.R. Krishna Iyer was a leading judicial figure but is not specifically credited with the introduction of PIL.
- Jus. M. Hidayatullah was another prominent judge of the Supreme Court, but he was not associated with the development of PIL.
Thus, the correct answer is Jus. P.N. Bhagavati.