The correct option is B <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->
I laughed when I heard Trisha's laugh.
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Here, 'laugh' is first used in the simple past tense form of the verb ‘laugh' which shows that it is used as a verb. Then, it is used as a noun to refer to the sound of laughter made by Trisha.