D. Women have greater moral power.
Explanation:
Angelina Grimke's assertion was for the greater moral power of women over men and due to which they should have a greater say in the political decisions of the country.
This view had come up during the 1st wave of rights movements where women were protesting for equal rights.
The argument of Grimke was that the world leaders were too cunning and never put up a moral standpoint which is important in such decisions.
It would be better to have women on the political front according to her as they have a better moral compass in them.