Concept:This question tests the ability to logically sequence jumbled sentences to form a coherent passage.
Explanation:S1 introduces degenerative/man-made non-communicable diseases defining epidemiological transition.
Sentence P directly follows S1 because it states that scholars confirm this transition and structural change are inevitable.
Next, S introduces Omran’s 1971 theory which explains the changing disease pattern.
Sentence R elaborates on Omran’s argument: the shift from infectious/parasitic to chronic/man-made diseases.
Finally, Q explains that this transition results from rapid urbanization and industrialization, leading into S6 which describes the rise in living standards.
Thus the proper order is S1 → P → S → R → Q → S6.
Answer:The correct sequence is PSRQ, which corresponds to option B.