Concept:The correct sequence of jumbled sentences follows a logical progression: introducing the philosopher's famous work, explaining his idea of power-sharing, the mechanism to prevent dominance, and the resulting benefit.Explanation:S1 states that Montesquieu was a great philosopher. Q immediately follows because it introduces his book "The Spirit of the Laws" and his theory of separating powers into three branches. P builds on this by describing how he wanted power shared among the king, nobles, and the Third Estate. R then explains the need for a new constitution based on checks and balances to prevent any one class from becoming too powerful. S provides the result: if this system is implemented, tyranny would be avoided and individual liberty safeguarded. The phrase "If this was done" in S directly refers to the constitution mentioned in R. Finally, S6 connects back to his support for a constitutional monarchy like England’s. Thus, the only sequence that maintains this logical flow is Q, P, R, S.Answer:Option C: QPRS