What is considered a breach of contract?

A breach of contract occurs when one party fails to fulfill their obligations as outlined in the agreement. This means that if a party does not perform the duties they promised or violates a specific term of the contract, it constitutes a breach. This can include not delivering goods or services, failing to make payments, or not adhering to the timelines stipulated in the contract.

Option B highlights the essence of a breach: the failure to fulfill terms that were mutually agreed upon. Therefore, when a party does not meet their responsibilities as described in the contract, it clearly indicates a breach has occurred, making this answer accurate.

The other options, while they may describe behaviors that could lead to a breach or indicate dissatisfaction, do not directly encompass the definition of a breach itself. Failing to inform the opposing party, changing payment terms after the agreement, or simply expressing dissatisfaction does not inherently mean that the contractual obligations have not been met; they may reflect a poor communication or renegotiation scenario instead.