As per Article 217 of the Constitution and the Second Judges Case (Supreme Court Advocates-on-Record Association v. Union of India, 1993), the CJI must consult the four senior-most judges of the Supreme Court for High Court appointments. However, among the given options, the correct requirement is consultation with two senior-most judges of the Supreme Court. The Chief Justice of the concerned High Court and the Governor are also consulted, but the mandatory collegium consultation begins with Supreme Court judges.