Final answer:
Sojourner Truth, an abolitionist and women's rights activist, delivered the speech 'Ain't I a Woman?' at the Ohio Women's Rights Convention in 1851, emphasizing the unique experiences of African American women.
Step-by-step explanation:
The abolitionist and women's rights activist who delivered the speech "Ain't I a Woman?" at the Ohio Women's Rights Convention in 1851 was C) Sojourner Truth. Born as Isabella Baumfree, Sojourner Truth was a formidable figure in both the abolition movement and the fight for women's rights. Her speech not only addressed her stance as an abolitionist but also tackled the complex intersections of race and gender, advocating for the unique acknowledgment of African American women's experiences within the broader women's rights movement.
Sojourner Truth's insights were especially influential because they challenged the norms of the time, which often prioritized White women's suffrage over that of Black women. Her speech continues to be celebrated as a pivotal moment in history for its profound impact on both the abolitionist movement and the campaign for gender equality.