Which of the following does NOT terminate an offer?

An offer is considered legally binding until it is accepted, terminated by the offeror, or otherwise rendered invalid by legal means. Acceptance is the action that completes the agreement between the parties; it signifies that the offeree agrees to the terms of the offer. When an offer is accepted, it transforms into a contract, thus it does not terminate the offer, but rather fulfills its purpose.

In contrast, a counteroffer constitutes a rejection of the original offer and simultaneously proposes a new offer with different terms, leading to the termination of the original offer. The death of the offeror generally terminates the offer as well, unless the offer is irrevocable or the offeree has already accepted it. Lapse of time refers to the expiration of the time frame during which the offer is valid, after which the offer is automatically terminated.

Therefore, acceptance is the only action that does not terminate an offer but instead validates it by creating a contractual relationship.