Concept:Sequence of four sentences (P, Q, R, S) between S1 and S6 to form a coherent paragraph.
Explanation:S1 introduces the Industrial Revolution as a period of transformation.
Sentence Q logically follows S1 because it explains that this transformation marked the shift from feudalism to capitalism across Europe.
Next, Sentence S elaborates on the nature of capitalism: factories and machinery are owned by the capitalist class.
Sentence P then describes the resulting polarization of society into capitalists and workers.
Finally, Sentence R details the workers' condition -- they sell their labour for wages, which leads into S6's statement about inadequate wages.
Thus, the correct order is Q, S, P, R.
Answer:QSPR (option C)