Which of the following is NOT a basic feature of the Indian Constitution?

The correct option is Drawn from one source.

Explanation:
The Constitution of India possesses several unique features. Let's evaluate each option to determine why "Drawn from one source" is NOT a feature of the Indian Constitution:

1. Drawn from Various Sources: The Indian Constitution was framed after borrowing and adapting features from numerous constitutions across the world, as well as the Government of India Act, 1935. For instance:
- Parliamentary System and Rule of Law: Borrowed from the British Constitution.
- Fundamental Rights and Judicial Review: Borrowed from the US Constitution.
- Directive Principles of State Policy (DPSP): Borrowed from the Irish Constitution.
- Federal System with a Strong Centre: Borrowed from the Canadian Constitution.
Therefore, the statement that it was "Drawn from one source" is false and is NOT a feature of the Indian Constitution.

2. Blend of Rigidity and Flexibility: The Indian Constitution is neither purely rigid like the US Constitution nor purely flexible like the UK Constitution. Under Article 368, some provisions can be amended by a simple majority, while others require a special majority of Parliament or ratification by at least half of the state legislatures.

3. Lengthiest Written Constitution: It is the most detailed written constitution in the world, owing to India's vast geographical size, cultural diversity, and detailed administrative provisions.

4. Parliamentary System of Government: India adopted a Parliamentary system at both the Central and State levels, promoting coordination and cooperation between the legislative and executive organs of government.

Hence, Drawn from one source is not a basic feature of the Constitution of India.