In what ways did the han dynasty change policies that the qin dynasty established

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

i think the answer is the one about environmental and social health.

hope this

the answer would be c