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In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

(CNN) -- People don't generally care what politicians read. But Rep. Paul Ryan is different. His fascination with the Russian-born novelist Ayn Rand could spell trouble for the GOP's new vice-presidential candidate. It could put him at odds with the Christian right and the Roman Catholic Church. It all depends how much you believe that he is in the thrall of Ayn Rand. Rand (1905-1982) is controversial because of the extremism of her views. In researching my recent book, I found that Rand's influence on the Republican Party, which dates back as far as her endorsement of Wendell Willkie in 1940, has been sharply growing, largely due to her vise-like hold on the imagination of the tea party and people like Ryan.Ayn Rand was a Russian-born novelist whose work celebrated selfishness, says Gary WeissIn April, Paul Ryan called reports of his adherence to Rand's views an "urban legend"But in 2005 Ryan said she was "the reason I got involved in public service," says WeissWeiss: That could put Ryan at odds with the Christian right and the Roman Catholic Church 
 Question:_ painted the world in stark terms, as a struggle between the individual and the collective.
Output:
Ayn Rand