The correct identification of civilizations with their classification is:
- West Africa and China are classical civilizations. (Correct)
- Egypt and Indus are classical civilizations. (Correct, but more specifically, they are often categorized as early civilizations.)
- Greece and Rome are classical civilizations. (Correct)
- Mesopotamia and Greece are river valley civilizations. (Incorrect; Mesopotamia is a river valley civilization, but Greece is not classified as such in the same context.)
So, the most accurate responses based on the classifications would be:
- West Africa and China are classical civilizations.
- Greece and Rome are classical civilizations.
The other categorizations may not be completely accurate as they apply more broadly or differ in classification.