Step 1: Understanding the Question.
Article 143 of the Indian Constitution provides for the advisory jurisdiction of the Supreme Court. When there is a substantial question of law, the President can refer the matter to the Supreme Court. A minimum of 5 Judges must sit to decide on such cases.
Step 2: Analysis of Options.
- (A) 2: This is incorrect as a minimum of 5 Judges is required for such cases.
- (B) 3: This is incorrect, as the minimum number is 5 Judges.
- (C) 4: This is also incorrect; the minimum is 5 Judges.
- (D) 5: This is the correct answer, as Article 143 specifies a quorum of 5 Judges for such matters.
Step 3: Conclusion.
Thus, the correct answer is (D) 5.