Answer;
C. will speak her mind and her heart without restrain or artifice
In the long sentence beginning “Animated by this important object, I shall disdain to cull my phrases,” Wollstonecraft tells her audience that she will speak her mind and her heart without restrain or artifice.
"Animated by this important object, I shall disdain to cull my phrases or polish my style--I aim at being useful, and sincerity will render me unaffected; for wishing rather to persuade by the force of my arguments, than dazzle by the elegance of my language, I shall not waste my time in rounding periods, nor in fabricating the turgid bombast of artificial feelings, which, coming from the head, never reach the heart"