P N Bhagwati, who passed away recently, was associated with which field?

Q. P N Bhagwati, who passed away recently, was associated with which field?
Answer: Law
Notes: Prafullachandra Natwarlal Bhagwati (95), the former Chief Justice of India (CJI), has passed away in New Delhi on June 15,2017. Justice Bhagwati is known for introducing and pioneering Public Interest Litigation (PIL) which transformed the legal landscape in India.