Which of the following is NOT a way contracts may be discharged?

The correct choice is D, as intimidation does not represent a legitimate or recognized method for discharging contracts. Contracts can be discharged through performance, where the parties fulfill their obligations as outlined within the agreement. Impossibility of performance occurs when unforeseen circumstances prevent the parties from executing the terms of the contract, typically due to factors beyond their control that make fulfillment impossible. Additionally, mutual agreement allows parties to discharge a contract if they both consent to terminate or modify the contract terms.

Intimidation, however, does not fit within these established categories. Instead, it may serve as a basis for legal action if one party coerces another into a contract or influences their decision-making under duress, but it does not serve as a valid means for discharging an existing contract.