Who has the right to impeach a contract?

The correct answer revolves around the concept of compelling reasons that lead to the possibility of a contract being impeached, primarily focused on the notion of wrongful or damaging behavior that impacts one of the parties involved. The victim of offending behavior has the standing to challenge the validity of a contract, especially if they can demonstrate that the contract was entered into under duress, fraud, misrepresentation, or undue influence. This party has the right to claim that the contract should not be upheld due to the wrongful acts of the other party, therefore ensuring legal protections against unfair practices.

In this context, the other options do not accurately reflect who has the authority to impeach a contract based on the legal principles governing contracts. For instance, a party who completed the contract does not inherently possess the right to challenge it unless there is a justifiable reason rooted in improper conduct. Similarly, courts do not automatically impeach contracts; they require a proper motion or claim from the aggrieved party. Lastly, while any party involved in a contract may have concerns about its validity, only the one who has suffered due to wrongful conduct has the right to formally seek its impeachment through legal channels.