Final answer:
Elizabeth Cady Stanton refers to women when mentioning "one portion of the family of man" in the Declaration of Sentiments, highlighting the inequalities they faced compared to men in terms of suffrage and civil rights.
Step-by-step explanation:
Elizabeth Cady Stanton is referring to women when she writes about "one portion of the family of man" in the Declaration of Sentiments. The Declaration, produced at the Seneca Falls Convention in 1848, clearly states that "all men and women are created equal" and itemizes grievances that address how white men have prevented white women from exercising their natural rights.
Stanton advocated for women's suffrage and equality, emphasizing that women were denied the same rights as men, including the right to vote, and contrasted this with other groups who, despite facing discrimination, had voting rights.