Final answer:
The Grimké sisters encountered hostility in the North due to their public speaking on the abolitionist cause and advocacy for women's rights.
Step-by-step explanation:
The Grimké sisters, Angelina Grimké and Sarah Grimké, encountered hostility in the North as antislavery activists because of their public speaking engagements on the abolitionist cause and their advocacy for women's rights.
Their lectures and speeches challenged social norms and broke traditional gender roles, which resulted in opposition and harassment from the public.
Additionally, their wealthy southern heritage and background as former slave owners made them unconventional figures in the antislavery movement, which further incited hostility from both the North and the South.