When Prussia was hit by famine in 1744, King Frederick the Great, a potato enthusiast, had to order the peasantry to eat the tubers. In England, 18th-century farmers denounced S. tuberosum as an advance scout for hated Roman Catholicism. “No Potatoes, No Popery!” was an election slogan in 1765. France was especially slow to adopt the spud. Into the fray stepped Antoine-Augustin Parmentier, the potato’s Johnny Appleseed.
Unlike the British, the French were not interested in taking over Native American Island. Instead, they were interested mainly in trading furs.
I believe the correct answer is C. They turned their attention to women's rights.
Having seen how people of color were struggling to get equal rights, the women began to question their own rights and came to the conclusion that they weren't in fact equal to their male counterparts. This is why they started fighting for their own freedoms, and managed to start it all at Seneca Fall Convention in 1848.
A and B are incorrect because it wasn't these two women who started the Union and the Society.