Which of the following is NOT an existent source of knowledge for early Slavic history?
A. Descriptions by Roman historians
B. Accounts by travelers from the Middle East
C. Native Slavic inscriptions from the pre-Christian era
D. Writings by Byzantine missionaries and their successors

My best guess would be A hope this helps

Explanation:

answer: born in saint-dié, in the vosges department, france, he studied law, and was called to the bar at paris in 1854,[2] but soon went into politics, contributing to various newspapers, particularly to le temps. he attacked the second french empire with great violence, directing his opposition especially against baron haussmann, prefect of the seine department. a series of his articles in le temps was later republished as the fantastic tales of haussmannlaxupa (1868).[2]

explanation: