Concept:Six-sentence passage reordering based on logical flow.
Explanation:S1 says the body never stops.
Q elaborates: it is always moving, sometimes more active.
So Q follows S1.
R explains that even in deep sleep we must breathe, showing continuous activity.
Thus R follows Q.
P states the body needs fuel for this endless activity.
So P follows R.
S concludes that the fuel must come from somewhere, leading to S6 (It comes from food).
The correct order is Q, R, P, S.
Answer:Option C: Q R P S.