Exp) Option c is the correct answer.

Option c is correct. I R Coelho case, 2007 is a landmark case which upheld authority of the judiciary to review laws – including the ones under the 9th Schedule – against violation of basic structure of the constitution. i.e., no item in ninth schedule can abrogate fundamental rights as they form basic features of the constitution. It is also known as the 9th Schedule case. It stated that Judicial review is a basic feature of the Constitution. Inserting any law in the 9th Schedule of the Constitution would not protect it from judicial scrutiny.