Which of the following indicates an invalid method of discharging a contract?

The correct answer highlights a concept in contract law concerning the methods through which a contract can be discharged. Discharging a contract refers to the termination of the obligations of the parties involved. Generally, contracts can be discharged in several valid ways, which include mutual agreement, performance, impossibility, or through specific legal remedies, such as damages or specific performance.

Involuntary performance as a method of discharging a contract is not recognized as valid. A contract requires the parties to voluntarily fulfill their obligations, and any form of performance that occurs involuntarily deviates from this principle. Involuntary scenarios may involve unforeseen circumstances that prevent a party from performing their obligations, but these do not discharge the contract itself. Instead, law might provide for certain remedies or adjustments like frustration of the contract or similar doctrines, but not involuntary performance as a recognized method of discharge.

On the other hand, specific performance is a remedy that compels a party to execute the contract as per agreed terms, often used in cases where damages are inadequate. Damages, on the other hand, are a monetary compensation awarded to the injured party in case of breach of contract. An agreement, specifically a mutual agreement by all parties involved, can effectively discharge a contract, as it reflects