Question

From the Declaration of Independence:

. . . That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness.

From the Declaration of Sentiments:

Whenever any form of government becomes destructive of these ends, it is the right of those who suffer from it to refuse allegiance to it, and to insist upon the institution of a new government, laying its foundation on such principles, and organizing its powers in such form, as to them shall seem most likely to effect their safety and happiness.

Why do Jefferson and Stanton include these similar excerpts in their documents?

because they are heartfelt praises intended to applaud activists
because they mention the Founding Fathers in an attempt to inspire
because they are powerful calls to change that define their causes
because they are battle cries that demand physical confrontation

Answer 1

because they are powerful calls to change that define their causes

Both passages use the same revolutionary language to justify refusing unjust authority and demanding a new government. Stanton echoes Jefferson to connect the women's rights movement to the Founders’ principles and to make a strong moral and political call for reform—not to praise activists or to explicitly call for violent confrontation.