Read the following passage and answer the questions.

The Constitution of India begins with the Preamble affirming its aims, objectives, and the guiding principles. The principles laid out in the Preamble are used for interpreting provisions of the Constitution that are vague and ambiguous; and as discussed in an earlier Unit, Preamble is the 'basic structure' of the Constitution. In that, the doctrine of 'basic structure' takes away the amendment power of the Parliament with regards to certain feature of the Constitution such as democracy, rule of law, secularism, separation of power and judicial review. Some of these features appear in the Preamble.

Which one of the following is not a basic structure?

Parliamentary Debates

The correct answer is Option (2) → Parliamentary Debates