Explanation:

1st option is incorrect because Principles of Natural Justice is no where mentioned in Constitution of India. 

Over time, many other features have also been added to this list of basic structural features.

• Rule of law
• Judicial review
• Parliamentary system
• Rule of equality
• Harmony and balance between the Fundamental Rights and DPSP
• Free and fair elections
• Limited power of the parliament to amend the Constitution
• Power of the Supreme Court of India under Articles 32, 136, 142 and 147
• Power of the High Court under Articles 226 and 227

Any law or amendment that violates these principles can be struck down by the SC on the grounds that they distort the basic structure of the Constitution.