According to the chart what was one cause to the russian revolution

Explanation:

According to the chart the main causes of the revolutions include the Czar's weak leadership, Revolutionary agitation challenging the government, and discontent among the people. The lack of strong leadership lead to the fall of the Czars and a new provisional government led by Alexander Kerensky. Revolutionary agitation led to the Bolshevik Revolution led by Lenin. The discontent of the people led to Russia signing a treaty with Germany and leaving WWI under the Bolsheviks. It also caused a civil war to break out between those who opposed Lenin's ideas. This can be compared to the America Civil war, where the confederates wanting to keep slavery, and the Northern States along with the government wanted to abolish it. Like what happens in the U.S we can infer that the government would win against the defiant army.

i believe the answer is d.