What was the impetus for the 1840s women's rights movement?

 At the World Anti-Slavery Convention in London in 1840, women in attendance were segregated from men and were not allowed full access to the proceedings.  Lucretia Mott and Elizabeth Cady Stanton left the convention because of that rule, and decided they would form a society and plan a convention to promote women's rights.

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Attending the 1840 abolitionist convention in London was when Elizabeth Cady Stanton first met.  They both had been sent as official delegates to the convention, representing groups in America.  But when they arrived and were told that women would not have full participation and should rely on men to speak for them, they left.  As Cady Stanton remembered it, she and Mott "walked arm in arm, commenting on the incidents of the day," and "resolved to hold a convention as soon as we returned home, and form a society to advocate the rights of women" (quoted in New York Historical Society resource page, 2017).

The convention that was planned by Mott and Cady Stanton took place in 1848, in Seneca Falls, New York.  It  was the first women's rights convention to be held in the United States, and was organized by women. Elizabeth Cady Stanton was lead author of an important document issued by what we now call the "Seneca Falls Convention."  The Declaration of Sentiments was signed by 68 women and 32 men who had been among the participants in the convention. The document was modeled after Thomas Jefferson's Declaration of Independence.  In the way that Jefferson had listed grievances against the British monarchy, the Declaration of Sentiments listed grievances against how man had oppressed woman in regard to civil rights.  

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d. protection of an individual’s rights regardless of sex

b. acknowledgment of an individual’s rights regardless of sex

c. inclusion of individuals in the us congress regardless of sex