Answer:
A) The classical era and postclassical
Explanation:
Since there is no timeline attached, I'm going to assume it is general history chronology.
Classical period (era) started in 8th century BC and lasted until 5th century AD. It is the period of Classical Antiquity.
Postclassical era comes after, as the name suggess. It lasted roughly from 5th until 15th century.
So, when Emperor Constantine establishe Eastern Roman Empire (Byzantine) in 330AD, that event belongs in classic era.
The fall of the Byzantine due to Ottomans, happened in 1453, in mid-15th century, which according to the timeline belongs in postclassical era.
