Which of the following is considered an express warranty?

An express warranty is a specific assurance provided by the seller regarding the quality or certain features of a property. This type of warranty is explicitly stated in the agreement and serves to protect the buyer by holding the seller accountable to the agreed-upon terms. When a seller makes specific promises about the attributes or performance of the property—such as stating that the roof is brand new, the plumbing is in perfect working order, or that specific appliances are included—these are classic examples of express warranties.

In contrast to the other choices, standard legal definitions in contracts are more about establishing general frameworks rather than specific assurances. General promises from builders about timelines can be vague and may not have the same binding nature as express warranties. The choice about the buyer assuming risks is related to the concept of caveat emptor, meaning "let the buyer beware," and does not provide any specific obligations or guarantees from the seller regarding quality. Therefore, the choice highlighting specific promises made by the seller about the quality of the property directly aligns with the definition and purpose of an express warranty.