The following five sentences, labeled 1 to 5, relate to a single topic. Four of these sentences can be arranged to form a logical paragraph. Identify the sentence that does not fit with the others and enter its number as your answer.

1. The social contract tradition meticulously articulates that the moral and legal foundations of political authority are derived from the stipulated consent of the populace, in contradistinction to claims based on divine right or hereditary succession.
2. This theoretical framework posits a voluntary surrender of a measure of individual natural liberty, undertaken in exchange for the protective apparatus and collective welfare inherent in a structured civil polity.
3. This originating consensus, whether construed as a historical compact or a regulative ideal, fundamentally delineates the legitimate scope and just exercise of governmental prerogative over its citizenry.
4. Thus, the enduring legitimacy of any sovereign entity is perpetually contingent upon its fidelity to these foundational terms and conditions, thereby reaffirming its rightful claim to governance.
5. Critics, nonetheless, frequently underscore the inherent difficulties in conceptualizing truly free consent, particularly when addressing the predicament of individuals who accede to an extant political order without any genuine opportunity for explicit affirmation or rejection.