Which of these led to the development of filial piety?   a: ancestor worship in early chinese civilization  b: respect for the emperor and the mandate of heaven  c: various gods worshiped in different regions  d: incorporation of buddhist ideas in the south

The philosophy of respecting the emperor and the Mandate of Heaven was one of the inspirations for the development of filial piety. It is a Confucian philosophy wherein "it is a virtue to respect parents, the elderly, and ancestors." It is of huge importance to the ancient Chinese society because it sets the moral value of people.

The answer is b