Answer:
B. Seleucus.
Step-by-step explanation:
He was one of the Diadochi. Who were the rival generals, families, and friends of Alexander the Great who fought for control over his empire after his death.
He served as infantry general under Alexander, he eventually assumed the title of basileus and established the Seleucid Empire over much of the Near East territory Alexander had conquered.
The Empire received Babylonia and from there expanded his dominions. At the height of its power, the empire included Persia, Anatolia, the Levant, and Mesopotamia.
The Seleucid Empire became a major center of Hellenistic culture.
I hope this answer helps you.