Who played a crucial role in exposing the moral injustices of slavery in British colonies?

The correct choice highlights the significant contributions of abolitionists, particularly figures such as the Quakers and Granville Sharp, in raising awareness about the moral injustices associated with slavery in British colonies. These individuals were driven by ethical convictions and a strong sense of social justice, which they articulated through writings, speeches, and activism.

The Quakers, a religious group known for their belief in the equality of all individuals, were among the earliest and most vocal critics of slavery, advocating for its abolition on moral grounds. Granville Sharp, a prominent English abolitionist, played a pivotal role in legal battles that challenged the institution of slavery, notably in cases that set key precedents for the rights of enslaved individuals in Britain.

Through their efforts, these abolitionists were able to rally public opinion against slavery, often employing moral and philosophical arguments that highlighted the inherent rights of individuals. This grassroots movement eventually contributed to significant legislative changes regarding slavery in British colonies and influenced broader discussions on human rights and justice.