I believe that It is C, because although the passage does focus on Mathilde's love for expensive things, broadly the subject is how Mathilde is discontent with the lifestyle she is now living, and D is too broad, and B is also too broad.
B. Achilles heal means a weakness.
<span>A. mock-epic
</span>Mock-epic<span>, also called </span>mock-heroic<span>, form of </span>satire<span> that adapts the elevated heroic style of the classical epic poem to a trivial subject. </span><span>
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