Why is inner core solid and hot?Explain.

Ithink the answer to that would be b):

The enviroment with hedge hogs

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.