I believe it is B, because it's using 'like' to compare the Arkenstone to different things.
A simile compares things with the words 'like' or 'as'.
The correct answers are:
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[B]: " A character has a complex personality " ; <em><u>AND</u></em>:
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[E]: " <span>A character who changes after experiencing conflict.</span> "
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The answer to that question is no