Concept:This is a paragraph arrangement question where you must order sentences P, Q, R, S logically between S1 and S6.
Explanation:S1 introduces a corpus as a source of usage samples.
Sentence R logically follows S1 because it explains that such samples, taken out of context, do not normally show word meanings—they merely show one actual occurrence.
Next, P connects to R by saying if the meaning has been previously explained, the samples cannot be chosen randomly.
Then, S gives the reason: the context makes spelling out the meaning unnecessary.
Finally, Q builds on S by asking: if these samples are to function as examples, what exactly should they exemplify?
S6 then adds that a sample may also need to show collocational tendencies, not just the previously explained meaning.
Thus, the correct order is S1 → R → P → S → Q → S6.
Answer:The correct sequence is RPSQ, which corresponds to option B.