Characterization in a story is exemplified by Wen's sociable behavior at the party.
Characterization in a story involves the author's techniques to develop and portray a character's traits, behavior, and personality. In the given options, the best example of characterization is Option D - Wen makes it a point to shake hands with everybody at the party. This action reveals Wen's sociable and friendly nature, providing insight into his character.
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