Final answer:
William Lloyd Garrison suggested that an oppressed person might begin to believe that oppression is acceptable due to the societal and institutional influences that normalize such injustice. The correct answer is option a.
Step-by-step explanation:
Based on the context of the abolitionist movement and the insights of William Lloyd Garrison, it's clear that he believed an oppressed person may come to believe oppression is acceptable. Garrison illuminated how institutional arrangements, including religious ones, could socialize individuals into accepting their oppression as normal or deserved. Oppressed individuals might internalize justifications for their own subjugation and lose sight of the inherent injustice, thus potentially viewing the oppressive status quo as unchangeable or even legitimate.