Which of the following judges of the supreme court of India is famously known as the ‘Green Judge’?

The correct option is Justice Kuldip singh.

Explanation:

Justice Kuldip Singh served as a judge of the Supreme Court of India from December 1988 to December 1996.

During his tenure, he delivered landmark judgments on environmental protection and public interest litigation (PIL) concerning ecology. He spearheaded numerous cases related to environmental preservation, including the protection of the Taj Mahal (Taj Trapezium Zone case), pollution of the Ganga river, and industrial pollution across India. Due to his pioneering efforts and strong judicial activism for environmental preservation, he came to be famously known as the 'Green Judge'.