Which of the sentences below best expresses the essential information in the highlighted s

entence in the passage？ Incorrect choices change the meaning in important ways or leave out essential information.

A．The artistic, political, economic, religious, and philosophical factors of a period contribute to the formation of the style. of a period as a whole.

B．The artistic, political, economic, religious, and philosophical forces of a period result in the variety of the style. of different artists of a period.

C．Each period has a common style. of all the artists, which is established by how the artists respond to the artistic, political, economic, religious, and philosophical forces that form. their environment.

D．Every period has a style. of its own, which has something to do with its artistic, political, economic, religious, and philosophical forces.