Concept:Sentence rearrangement requires identifying the grammatically correct and logical sequence of the given parts to form a coherent statement.
Explanation:Part R starts with the noun "applications," which can begin a sentence.
Part S follows R as it specifies the group ("from Indian Nationals") for whom the applications are invited.
Part Q comes next as it tells the purpose ("as Teacher of Indian Culture for two years").
Part P ends the sentence by providing the location ("for contractual assignment at Cultural Centres abroad").
Thus the logical sequence is R → S → Q → P.
Checking the other sequences: QPRS, SRPQ, PQRS all break grammatical rules or produce illogical order.
For example, starting with "for contractual assignment" (P) or "as Teacher" (Q) is incorrect because a preposition phrase cannot begin a sentence.
Answer:RSQP is the correct order.