TOEFL Reading: ETS-TOEFL阅读机经 - 7S65H97N387062OCL$

The author mentions the "Mexican Revolution" in the passage in order to A. explain how the Mexican government used muralism to challenge European political beliefs B. emphasize an important reason that Mexican muralism thrived C. give an example of one the most popular subjects of muralism D. emphasize the success of Mexican artists who participated in political conflicts