(07.03 mc)what idea did confucius introduce to social relationships in ancient china?
a: the idea of filial piety, that children should respect and honor their parents and ancestors
b: the idea of yin and yang, that there are two totally opposite forces at work in social relations
c: the idea of ancestral descent, that firstborn male children are the most important family members
d: the idea of the mandate of heaven, that the gods would allow kings to be overthrown if they were corrupt