Step 1: To form a meaningful sequence, we need to ensure that the clauses are logically connected.
Step 2: The sentence talks about India facing a challenge due to colonial intrusion and how there was an effort to rejuvenate traditional culture. The best logical flow is:
- Q (challenge of colonial intrusion) comes first, as it sets the context.
- S (effort to reinvigorate traditional institutions) logically follows, as it is the response to the challenge.
- P (traditional culture in pre-independence India) comes next to explain what needed revitalization.
- R (developed during the nineteenth century) concludes by explaining when this revitalization effort happened.
Thus, the correct sequence is option (B) Q - S - P - R.