Explanation
The maximum number of judges sitting in one case in the Supreme Court of India has been thirteen. This happened in the landmark Kesavananda Bharati case in 1973, which dealt with the interpretation of the Indian Constitution and the extent of the Parliament's power to amend it.
The case was heard by a bench of thirteen judges, which was the largest bench ever constituted in the Supreme Court of India. The bench delivered a split verdict of 7-6, with the majority holding that the Parliament's power to amend the Constitution was not unlimited, and that certain basic features of the Constitution could not be altered even by a constitutional amendment.
Since then, several cases have been heard by benches of nine judges, which is the second-largest bench in the Supreme Court. However, the size of the bench is determined by the Chief Justice of India, based on the importance and complexity of the case.
Therefore, the correct answer to the question is option C: Thirteen.
