To determine which option examines how art as a cultural practice connects river valley civilizations to classical civilizations, we need to focus on the shared symbolic elements that reflect their religious or cultural practices.
The correct choice would be:
O Both civilizations used bulls to symbolize religion.
This option highlights a common cultural and religious practice that can be found in both river valley civilizations (like the Indus Valley Civilization or ancient Mesopotamia) and classical civilizations (like the Greeks or Romans), where bulls often held symbolic significance in their religious rituals and art.