Step 1: Understanding the Contribution of Justice P. N. Bhagwati.
Justice P. N. Bhagwati is known as the father of Public Interest Litigation (PIL) in India for his landmark judgments in the 1980s that made access to justice easier for the underprivileged and marginalized sections of society.
Step 2: Explanation of Other Options.
- (A) Justice A. N. Ray was a notable judge but not known for PIL.
- (B) Justice Y. V. Chandrachud is an important figure in the judiciary but did not pioneer PIL.
- (C) Justice R. S. Pathak was an influential judge but not credited with starting PIL.
Step 3: Conclusion.
Justice P. N. Bhagwati is the recognized father of PIL in India.