Final answer:
Slave narratives served to expose the horrors of slavery and garner support for its abolition.
Step-by-step explanation:
The function of slave narratives within the abolition movement was to highlight the atrocities and inhumanity of slavery, and to generate public support for the abolition of slavery. Slave narratives, such as those written by Frederick Douglass and Harriet Jacobs, provided firsthand accounts of the experiences and struggles of enslaved people. These narratives exposed the harsh realities of slavery and captivated readers, stirring empathy and moral outrage, which helped to build momentum for the abolitionist cause.