Concept:The correct sequence of sentences forms a coherent paragraph from S1 to S6.
Explanation:S1 introduces the topic: Republic Day falls on 26th January.
Sentence S logically follows S1 because it adds further detail about the way the day is celebrated (with great pomp and show).
Next, sentence R connects to S by explaining that people from far and wide come to witness this celebration.
Then, sentence Q specifies the location of the celebration at India Gate, which links to the people arriving to witness it.
Finally, sentence P comes after Q because it describes the President taking the salute, which directly leads into S6 (He attends the march past).
Thus, the correct order of the middle sentences is S, R, Q, P.
Answer:The correct sequence is SRQP. (Option C)