Question

The Seneca Falls Convention of 1848 was key in

Answer 1

I think it's D. Elevating the cause of women's rights to an issue of national concern.

Answer 2

Answer:  Elevating the cause of women's rights to a national concern.

Explanation/context:

The national meeting held in Seneca Falls, New York, in 1848, was the first women's rights convention to be held in the United States, and was organized by women.  Elizabeth Cady Stanton was one of the principal organizers of the gathering, and also was the 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.  

Following the Seneca Falls Convention, women's rights organizations began regular activities.  The American Woman Suffrage Association (AWSA) and National Woman Suffrage Association (NWSA) were started in 1869.