Hi,
Great question on A vs. B because it highlights the core issue of this problem - comparisons. First off, we can tell that we're dealing with a comparison issue due to the presence of the marker word "like." Once we recognize that comparisons are in play we need to make sure of two things:
1. Parallelism - The things we're comparing must be structurally similar
2. Parallelism part 2 - The things we're comparing must be logically comparable. I call this the "apples to apples" clause.
Like Rousseau, Tolstoi rebelled against the unnatural complexity of human relations in modern society.
A. Like Rousseau, Tolstoi rebelled
B. Like Rousseau, Tolstoi´s rebellion was
In A, we're comparing Tolstoi to Rousseau. Structurally, we're comparing a person to a person. This works structure wise and fits the meaning of the sentence. The two authors were similar in that they rebelled against the unnatural complexity of human relations.
In B, we're comparing a person to the rebellion of another person. Right away we can see we're not violating the "apples to apples" comparison clause because a rebellion and a person aren't logically comparable.
In the future remember this "apples to apples" rule and I think you'll be better off.
Thanks,
Chris