What examples of syncretism reflect the classical era to 600 ce?

The examples of syncretism replicate the classical era to 600 CE is the convergence of Greco roman culture and Buddhist beliefs this pretentious the improvement of exceptional thoughts such as sculptural, architecturally and literary works. In additional, the additional influential of the classical era empires are Persian empire, qin and han dynasty, maurya and gupta empires and Hellenistic and roman empires. 

Ithink that the answer is c