The Seneca Falls Convention of 1848 was crucial in

Responses
A the immediate passage of the Nineteenth Amendment.the immediate passage of the Nineteenth Amendment.
B allowing women the right of suffrage in South Carolina.allowing women the right of suffrage in South Carolina.
C causing the women's suffrage to be ignored until after World War II.causing the women's suffrage to be ignored until after World War II.
D elevating the cause of women's rights to an issue of national concern.elevating the cause of women's rights to an issue of national concern.

D elevating the cause of women's rights to an issue of national concern.