According to B. R. Ambedkar, which one among the following Articles is the 'heart and soul' of the Constitution of India?

Dr. B. R. Ambedkar described Article 32 of the Indian Constitution — which guarantees the right to constitutional remedies, allowing citizens to move the Supreme Court directly for the enforcement of Fundamental Rights — as the 'heart and soul' of the Constitution. Without Article 32, the Fundamental Rights guaranteed in Part III would be unenforceable.