Which of the following was the occupation of the Ancient Greek, Zosimus?

Zosimus; also known by the Latin name Zosimus Historicus, i.e. "Zosimus the Historian"; fl. 490s–510s) was a Greek historian who lived in Constantinople during the reign of the eastern Roman Emperor Anastasius I (491–518).

According to Photius, he also held the office of "advocate" of the imperial treasury. Zosimus was also known for condemning Constantine’s rejection of the traditional polytheistic religion.

Zosimus was the author of 'Historia Nova' ("New History"), which is written in the Greek language and is a six books compendium.

Drawing upon various sources, for the period from 238 to 270, he apparently uses Dexippus; for the period from 270 to 404, Eunapius; and after 407, Olympiodorus. His dependence upon his sources is made clear by the change in tone and style between the Eunapian and Olympiodoran sections, and by the gap left in between them. In the Eunapian section, for example, he is pessimistic and critical of Stilicho; in the Olympiodoran section, he offers precise figures and transliterations from the Latin, and favors Stilicho.

It is important to point out that Zosimus was a pagan, and is by no means sparing of the faults and crimes of the Christian emperors. In consequence of this, his credibility has been fiercely assailed by several Christian writers, but it also has been sometimes defended merely because his history tended to the discredit of many leading persons in the Christian party.