Concept:The sentence is a jumbled conditional idea about peace being the only alternative, applicable both in war and peaceful times.
Explanation:Start with the main assertion: "peace is always the only alternative" (R).
Then introduce the first condition: "not only during war and" (Q).
Next, specify the condition: "turbulent times" (P).
Finally, complete the contrast: "but also during peaceful times" (S).
Thus the logical order is R, Q, P, S.
Answer:The correct sequence is RQPS, which corresponds to option (c).