Which option describes the acceptance of an offer?

The acceptance of an offer is a crucial concept in contract law and is fundamentally about agreeing to the terms set forth in the offer. When a party accepts an offer, they are indicating their willingness to enter into a contract on the specific terms that have been proposed. This agreement establishes that both parties have a mutual understanding, which is essential for a binding agreement.

While signing a contract (the first choice) and providing verbal confirmation (the second choice) can be forms of acceptance, they typically require the underlying agreement to the terms first. Simply agreeing to the terms means that both parties have acknowledged and consented to the specifics of the offer without ambiguity or additional conditions.

The last option, which involves refusal of conditions, directly contradicts acceptance. Acceptance must indicate agreement rather than rejection of the terms. Thus, the correct answer emphasizes the essence of acceptance as the acknowledgment of the terms presented, making it the most comprehensive representation of the concept in question.