by giladedelman Thu Aug 25, 2011 12:43 am
Thanks for the question and answer!
I would point out that you shouldn't eliminate the "who was either a socialist or a communist" part from your diagramming. If answer (A) left out the word "socialist," it would be incorrect.
But otherwise, your analysis is good: we know that all socialist/communist political philosophers in the early 20th century were influenced by Rosa Luxembourg, and no one influenced by her advocated a totalitarian state, so none of those philosophers could have advocated such a thing. That's why (A) is correct.
(B) is incorrect because there could be non-socialist, non-communist philosophers who were not influenced by Luxembourg but were still anti-totalitarian.
(C) is incorrect because they could have been influenced by others, too.
(D) is out because she could have influenced other groups besides socialists and communists.
(E) is out basically in the same way as (B).