Statement 1 is Incorrect: The Summit's intellectual framework and core philosophy were anchored in three foundational principles (Sutras): People, Planet, and Progress, not People, Planning, and Progress.

Statement 2 is Incorrect: The New Delhi Declaration introduced the Charter for Democratic Diffusion of AI to promote affordable access to foundational AI resources, support local innovation, and build resilient AI ecosystems. However, it was established as a voluntary and non-binding framework, respecting national laws, rather than a binding treaty.

Statement 3 is Correct: The New Delhi Declaration on AI Impact was structured around seven thematic pillars of action, officially referred to as Chakras. These foundational areas included Access for Social Empowerment, AI for Science, and Secure and Trusted AI, alongside Democratizing AI Resources, Economic Growth & Social Good, Human Capital Development, and Resilient, Efficient & Innovative AI Systems.

Therefore, option D is the correct answer.