The Grimké sisters based their argument for equal rights for women on the moral nature of human beings. Option B is correct.
The Grimke sisters were notable figures for women's rights and very passionate in their Abolition cause. They were the first American female advocates of abolition and women's rights. They were writers, orators, and educators.
The Grimke sisters Sara and Angelina were born in the southern state of South Carolina in the United Sates in 1782 and 1805, respectively. They were very religious.