Which choice best describes the function of the underlined sentence in the text as a whole?

In her reevaluation of preindustrial agrarian unrest, historian Elena Vance challenges the prevailing dichotomy between moral-economy models—which attribute peasant resistance to perceived breaches of traditional communal obligations—and rational-choice frameworks that view such uprisings as calculated responses to material scarcity. Vance contends that this binary reifies a false distinction between normative ethics and strategic self-interest. To substantiate this, she analyzes archival petitions from seventeenth-century provincial revolts, demonstrating that rural laborers frequently deployed the rhetoric of customary paternalism not out of an uncritical adherence to tradition, but as an opportunistic legal shield against state prosecution. <u>By articulating their grievances through the lexicon of established social contracts, the insurgents sought to legitimate their disruption while mitigating the risk of violent reprisal.</u> Consequently, Vance argues, customary appeals functioned as tactical instruments rather than purely ideological commitments.