Answer:
Option A.
Step-by-step explanation:
Classical China, classical India, and the classical Mediterranean basin, is the right answer.
Classical age is the period in the history of the world in which many civilization flourished in various parts of the world. The three main regions were the classical civilizations flourished are the classical Mediterranean basin, classical China and classical India. While, the classical Mediterranean basin witnessed the development of two prominent classical civilizations (the Greeks and the Romans), the classical age in China is observed in the period between the rise of Zhou Empire till the Han Dynasty. In classical India the Mauryan and Gupta Empires can be observed.