Which of the following best describes "ardent"?

Choosing "intensely passionate" as the best description of "ardent" accurately captures the essence of the word. "Ardent" describes a state of strong enthusiasm, eagerness, or fervor, often associated with passionate feelings towards someone or something. This intense passion can be seen in various contexts, such as love, dedication to a cause, or vigorous pursuit of interests.

In contrast, the other options present descriptions that reflect the opposite or a lack of intensity. For example, "uninspired and dull" suggests a lack of energy or enthusiasm, "emotionally withdrawn" indicates a disconnection and absence of passion, and "casual and carefree" implies a relaxed state that lacks the fervent commitment embodied by "ardent." Therefore, "intensely passionate" aligns perfectly with the core meaning of the word.