Answer:
B) The Russian revolution of 1905 led to limits on the czar´s power, but the Russian revolution of 1917 ended the czarist system altogether.
Step-by-step explanation:
The Russian Revolution of 1905 was an uprising of all the members of the social class against the government and the high class. It included workers and peasants strikes and military mutinies. The Revolution led to the creation of the State of Duma and the first Russian Constitutions which limited the powers of the monarchy.
While during the Russian Revolution if 1917 the monarchy was completely overthrown and a socialist way of governing was put on its place. The Soviet Union was created from this revolution.
I hope this answer helps you.