Concept:Arrange jumbled sentences logically based on introduction, structure, rights, and examples.
Explanation:S1 introduces the Constitution’s basic principles.
Sentence Q describes India as a secular, democratic republic with a parliamentary system and adult franchise. It follows S1 naturally.
Sentence P explains the federal structure, with division of powers between Union and State governments. It logically comes next.
Sentence S introduces fundamental rights guaranteed to citizens. This flows from the previous sentences about government structure.
Sentence R gives examples of those fundamental rights (freedom of speech, assembly, etc.). It concludes the sequence.
Thus, the correct order is Q, P, S, R.
Answer:The correct sequence is Q P S R, which corresponds to option A.