The version of the underlined portion of sentence 13 that best accomplishes this goal is "one of the most successful investors in history."
This is because by describing Warren Buffet as one of the most successful investors in history who make people consider his techniques and, in turn, would convince the readers that the techniques used by Warren Buffet are credible because they yielded results.
Option A is wrong because just the date and location of birth would not convince readers.
Option B is wrong because being a storyteller has nothing to do with financial intelligence.
Option D is wrong because being a philanthropist doesn't mean one has financial knowledge.
Option E is wrong because having a father who is a Congress member does not infer financial expertise.
Hence, in this case, the right answer is option C.
The available options are:
A. (as it is now)
B. whose ability to tell a story is legendary
C. one of the most successful investors in history
D. a noted philanthropist
E. whose father was a member of the United States Congress
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