What does anthropologist Vanessa Fong mean when she says that urban singleton girls have been empowered to challenge some of the gender norms of Chinese society?

With girls being born with no other sibling it challenges the norms because they are able to set new standards for girls when they don't have to compare themselves to another sibling, specifically a boy, because of the one child rule.

Explanation:

answer(c) carved on a babylonian clay tablet that showed earth as a flat circular disk;