Final answer:
Eastern Orthodox Christianity and the Cyrillic alphabet were introduced to Russia by the Greeks, specifically through the efforts of St. Cyril who created the Cyrillic alphabet, and the conversion of Prince Vladimir I to Eastern Orthodox Christianity in alliance with the Byzantine Empire. The option (C) is correct.
Step-by-step explanation:
Eastern Orthodox Christianity and the Cyrillic alphabet were introduced to Russia by the Greeks. The pivotal figure in this historical narrative was St. Cyril, who in the 9th century along with his brother Methodius, created the Cyrillic alphabet to translate Greek liturgy into Slavonic for religious education and conversion of the Slavic peoples. This missionary work facilitated by the Cyrillic alphabet laid the foundation for the eventual conversion of Prince Vladimir I of Kiev, and by extension, Kievan Rus' (the early form of Russia) to Eastern Orthodox Christianity in the late 10th century following the alliance with the Byzantine emperor Basil II.
The significance of the Kievan Rus' conversion is that it integrated the emerging Russian territory into the sphere of the Byzantine Empire's cultural and religious influence. Moreover, this conversion, which included the mass baptism of Vladimir's subjects in the Dnieper River, represented a strategic choice to ally with Byzantium for both political and cultural reasons, thus forging a connection with the prestige of the old Roman Empire. Therefore, option (C) is correct.
This question is not complete, Here I am attaching the complete question:
Eastern Orthodox Christianity and the Cyrillic alphabet were introduced to Russia by:
a) Vikings
b) Mongols
c) Greeks
d) Romans