Which of the following would excuse a condition added to the contract for the benefit of the buyer?

A written waiver from a buyer for a buyer's condition is the correct answer because it represents a formal and intentional relinquishment of a known right or condition embedded in a contract. In real estate transactions, written waivers are essential as they provide clear documentation of the buyer's decision to forgo the specific condition, which could pertain to aspects such as financing, inspections, or other contingencies that were put in place to protect the buyer's interests.

The process typically requires the buyer to communicate their decision in writing to ensure that all parties are aware and acknowledge the waiver. This written record can prevent misunderstandings and disputes in the future, as it leaves no ambiguity about the buyer's intentions regarding the condition they are waiving.

On the other hand, a waiver from the seller, whether written or verbal, would not apply here because the condition was initially for the buyer's benefit. The buyer is the party who must make the decision to excuse the condition. Furthermore, verbal waivers generally lack the same legal standing and enforceability as written waivers, which could lead to complications in proving that an agreement was made. Therefore, it's crucial for both buyers and sellers to rely on written documentation to ensure clarity and protection in the transaction.