To identify the antonym for the underlined word compliment, we first need to define it. A 'compliment' is an expression of praise or admiration. Consequently, we seek a term that represents the opposite: a critical or negative remark.
Examining the provided options:
Among the choices, denunciation most accurately serves as an antonym for 'compliment' due to its meaning of severe disapproval or criticism, directly contrasting with praise.
Therefore, the correct answer is: Denunciation