Questions: Advertisements are generally not valid offers because ads do not contain sufficient words of commitment to sell what is advertised.

The answer is "sell."

Explanation: Advertisements are generally not considered valid offers because they typically lack the specific words of commitment necessary to form a binding contract to sell what is advertised. In contract law, an offer must be clear, definite, and explicit, leaving nothing open for negotiation. Advertisements usually invite customers to make an offer to buy, rather than making an offer to sell. This distinction is important because it means that the advertiser is not legally obligated to sell the product at the advertised terms until they accept the customer's offer.