Concept:The sentences must be arranged in a logical sequence based on cause and effect in language change.
Explanation:S1 introduces the topic that languages in contact cause change.
Sentence Q states that language contact is a major driver of change, so it directly follows S1.
Sentence S gives a historical example (Danish and English) to support Q, so it comes next.
Sentence P continues by describing the modern effect of English on local languages, so it follows the example.
Sentence R concludes by noting that such contact gives rise to hybrid varieties, leading into S6 about informal change.
Thus the correct order is Q, S, P, R.
Answer:Option B: Q S P R
