The correct option is B <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->
Her words were daggers
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Here, the comparison between her words and daggers is indirect, saying the words were daggers themselves. It means her words were so precise and to-the-point that they countered every argument they put forward. The comparison does not use any comparison words. Hence, it is a metaphor.