Unlike painting from the medieval period, Renaissance artists

The answer is D.  During the Renaissance, artist tried to make their work as realistic as possible. With the careful use of light and the study of human anatomy, they tried to have a harmonious proportion of the human body, which was not the case in medieval art.  They also tended to use a natural background rather than a biblical setting like in most medieval art.  

the quote by walter cronkite contributes to the central idea of the text by supporting the central idea. cronkite argues that what is deemed “right” for and in america may not be good for other countries. this supports the central idea of the text, that the vietnam war was unpopular in america for multiple reasons- including cronkite’s.