who was ivan the great? the last grand prince of kiev russias leader against the mongols the christianizer…

Brief Explanations:

Ivan the Great was a key figure in Russian history. He expanded the Grand Duchy of Moscow, strengthened its power, and was not related to being the last Grand - Prince of Kiev, nor was he the Christianizer of Kievan Rus. He did play a role in the struggle against the Mongol - Tatar yoke and was an important leader in the development of a more unified Russian state.

Answer:

None of the above options are correct. Ivan the Great was the Grand Prince of Moscow who significantly expanded Moscow's territory and authority, laying the foundation for the Russian state.