Which one of the following does *not* describe the procedure or substa

Which one of the following does *not* describe the procedure or substance of the amendments to the Indian Constitution ?

The Bill to amend the Constitution has to be laid in any House of the Union Parliament.
The basic features of the Constitution cannot be amended.
In the event of a deadlock between the two Houses of the Parliament, there is no provision for a joint session.
The President cannot veto a Bill for the amendment of the Constitution.
This question was previously asked in
UPSC CISF-AC-EXE – 2020
The statement “The basic features of the Constitution cannot be amended” describes a substantive limitation on the amending power derived from judicial interpretation, rather than a direct description of the formal amendment procedure outlined in Article 368 or the explicit substance mentioned therein.
– Article 368 of the Constitution lays down the procedure for constitutional amendment.
– Statements A, C, and D describe aspects of this formal procedure: A) Bill can be introduced in either House (Art 368(2)), C) No joint session for amendment bills (Art 108 doesn’t apply to Art 368 bills), D) President must give assent (Art 368(2) as amended by 24th Amendment).
– Statement B refers to the ‘Basic Structure’ doctrine established by the Supreme Court (Kesavananda Bharati case, 1973). While a fundamental principle governing the *power* of amendment concerning substance, it is a judicially evolved concept and not part of the explicit procedural steps or inherent substance described in the constitutional text of Article 368.
The Basic Structure doctrine is a significant limitation on Parliament’s power to amend the Constitution, ensuring that essential features remain intact. However, when asked to describe the *procedure* or *substance* within the formal framework, statements detailing the steps and requirements of Article 368 (like introduction, passage, assent) are direct descriptions, whereas the basic structure is a judicially imposed constraint on the *extent* of amendment concerning substance, not a description of the substance itself or the process to change it.