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(See the complete passage discussion here: lsat/viewtopic.php?t=13636)
The correct answer choice is (C)
Again, the answers to Global Reference Must Be True questions are quite difficult to prephrase, so the Fact Test must be applied to find the choice that can be confirmed by the information provided in the passage.
Answer choice (A): The passage provides that prions occur naturally in cell tissues, and that they possess the capability to, on their own, transform themselves into abnormal shapes. This choice discusses the transmission of CJD from an infected individual to an uninfected one; this answer is not confirmed by the information provided in the passage, so it fails the Fact Test and cannot be the right answer to this Must Be True question.
Answer choice (B): If you found this answer choice appealing, that is, of course, by design; the author does mention in the final paragraph that other neurological disorders are now thought to be caused by similar processes, but this choice goes much farther than that, claiming that most infectious diseases are now thought to be caused by prions, This is entirely unsupported by the passage, so it should be ruled out of contention.
Answer choice (C): This is the correct answer choice. In the third paragraph, the author mentions that prions are able to reproduce in an unexpected way, helping to create the pathogenic conformation.
Answer choice (D): The author does mention at the end of the passage that those common neurological conditions are now thought to be caused by processes similar to those that cause CJD, but this does not mean that those disorders are different conformations of the CJD-causing pathogenic prion.
Answer choice (E): The author never makes the assertion presented in this answer choice, nor does the passage even provide such a comparison, so this choice cannot be the right answer to this Must Be True question.