For an offer to be valid:

A) the offeree must have knowledge of the offer.
B) the offeree must have first-hand knowledge of the offer.
C) the offer must be stated or communicated by words.
D) the offer must be made by the offeror.

Valid Offer

A legally binding proposal made by one party to another to form a contract, requiring clear terms, intention, and communication.

Knowledge

The understanding, awareness, or familiarity gained through education or experience.

First-Hand Knowledge

refers to information or knowledge gained through direct experience or observation, as opposed to being told by someone else.