Which of the following actions is typically a breach of contract?

Failing to deliver the property constitutes a breach of contract because it directly violates the terms agreed upon in the sales contract. When parties enter into a real estate agreement, they make commitments that must be fulfilled for the contract to be legally binding. The delivery of property is a fundamental obligation; if one party is unable or unwilling to fulfill this obligation, it undermines the purpose of the contract and leaves the other party without the benefits they expected to receive.

In contrast, making minor modifications with consent, providing additional disclosures, or extending the closing date typically involve adjustments that can be made with mutual agreement between parties. These actions often reflect flexibility and communication rather than a failure to meet contractual expectations. Thus, they do not generally qualify as breaches of contract under normal circumstances.