Respuesta :
Answer: Revoking once the performance begin is not possible.
Explanation:
Under the modern-day view, an offer that can only be accepted by completion of a specific act cannot be revoked once performance has begun.
Answer:
C) not be revoked once performance has substantially begun.
Explanation:
Once an offer is accepted and one of the parties has started its performance act, the other party cannot simply terminate or discharge the contract unilaterally. Well, they actually can, but it will most likely result in a lawsuit and they will have to pay compensatory damages for breaching the contract.