To demand something fiercely can be described using which of the following words?

The term "exact" in this context conveys a strong sense of demand, implying not just a request, but rather a firm and forceful assertion that something is due and must be given. When one "exacts" something, it often suggests a level of determination or urgency in the claim, which aligns well with the idea of demanding something fiercely.

In contrast, while "request" denotes a polite asking for something, it lacks the intensity associated with fierce demands. "Insist" does capture some forcefulness but is often more about repetition or persistence rather than the act of demanding something assertively. "Claim," on the other hand, can refer to stating a right to something but doesn't inherently convey the fierce demand aspect; it often lacks the urgency or intensity implied by "exact." Thus, "exact" is the most fitting choice to describe a fierce demand.