Concept:This question tests the ability to arrange sentences logically to form a coherent paragraph. The correct sequence is identified by finding the introductory sentence, then linking ideas in a clear flow.
Explanation:Sentence Q introduces the central idea about the known dark side of junk food.
Sentence S follows naturally as it expands on Q by mentioning the effects (add inches) and leading into a new point.
Sentence R completes the thought started in S (the studies indicate that junk food damages the brain).
Sentence P concludes the paragraph by highlighting the worrying consequence: mental meltdown from regular consumption.
Thus, the logical order is Q → S → R → P, which corresponds to option A (QSRP).
Answer:Option A (QSRP)