Final answer:
An offer to purchase real estate can be terminated in several ways, including failure to accept the offer within a prescribed period, revocation by the offeror communicated to the offeree after acceptance, and a conditional acceptance of the offer by the offeree. Death or insanity of the offeror or offeree is not a way by which an offer to purchase real estate would be terminated.
Step-by-step explanation:
An offer to purchase real estate can be terminated in several ways. One way is if the offeror fails to accept the offer within a prescribed period. Another way is if the offeror communicates a revocation of the offer to the offeree after acceptance. Additionally, if the offeree provides a conditional acceptance of the offer, it can terminate the offer. However, death or insanity of the offeror or offeree is not a way by which an offer to purchase real estate would be terminated.