Which line from a vindication of the rights of women conveys the essays main theme

This is the line which conveys the main theme of Vindication of the Rights of Women:
"women... ought to cherish a nobler ambition, and by their abilities and virtues exact respect..."
This essay was written in 1792 by a famous feminist author Mary Wollstonecraft, who fought for the rights of women. She believed that women were capable of so much more than being housewives, and she urged them to get their education and demand respect they deserve. 

B." to guard against " is correct answer

Sometimes when you read things in your head, you skip overall small details/words. when you read aloud, you hear those words and it’s easier to comprehend what you just read. saying things aloud also you remember them.