Answer:
D: not enforce it.
Step-by-step explanation:
Based on the information provided within the question it can be said that in this specific scenario a court would most likely not enforce this extra agreement. This is because it is not directly clear on what the payment is for. Since they are paying extra for Genovese Contracting to put extra effort and over come the obstacles, but they may not be able to do so if these obstacles are out of their control.