The following four labelled sentences P, Q, R and S, when properly sequenced, form a coherent paragraph about India’s Republic Day celebrations. Select the most logical order.

Introduction / Context:
This para-jumble question focuses on Republic Day celebrations in India. The sentences mention the date, the location, the nature of the celebration, and the ceremonial parade. The aim is to arrange them in a sequence that starts with the basic fact, then adds details about where and how the day is celebrated.

Given Data / Assumptions:
- P: Republic Day of India is celebrated every year on 26th of January.
- Q: A huge celebration event is organised annually in the national capital, New Delhi.
- R: It is celebrated at the Rajpath, India Gate before the President of India.
- S: A grand ceremonial parade of Indian army takes place at Rajpath to honour the Indian Flag.
- We need an order that starts with the date and occasion, then moves to the city, the exact venue and the main highlight of the celebration.

Concept / Approach:
Sentence P is the natural starting point because it states what is celebrated and on which date. Q then zooms in to the national capital, New Delhi, where the main celebration takes place. R specifies the exact location within the capital, Rajpath at India Gate, and mentions the presence of the President. Finally, S highlights the grand ceremonial parade of the Indian Army at the same venue. Thus, the logical progression is P–Q–R–S, moving from general to specific details.

Step-by-Step Solution:
Step 1: Start with P, which introduces Republic Day and the fixed date of 26th January.
Step 2: Add Q, noting that a huge celebration event is organised each year in New Delhi, the national capital, which narrows the location.
Step 3: Insert R, which further narrows the celebration venue to Rajpath at India Gate and mentions that it is held before the President of India.
Step 4: Finish with S, which describes the highlight of the event – the grand ceremonial parade honouring the Indian flag.

Verification / Alternative check:
Reading PQRS as a paragraph gives a clear picture: what, when, where and how. Any other sequence, such as QRPS, would start with the event in New Delhi without first explaining what is being celebrated, and QSRP would jumble venue and parade, making the structure less smooth.

Why Other Options Are Wrong:
- SRQP, QSRP and RSPQ: These arrangements disturb the natural order from date to city to venue to parade, causing minor confusion and breaking the logical build-up of details.

Common Pitfalls:
In questions about festivals or national days, some learners are tempted to begin with the most dramatic detail, such as the parade. However, a well-structured paragraph usually starts with the name and date of the event and then adds layers of detail. Always check which sentence clearly names the event and treat it as a strong candidate for the opening line.

Final Answer:
The most logical order of the sentences is PQRS.