Answer:
No.
Explanation:
The contract is no longer valid because of changes in the condition of offer. By the operation of law, the occurrence of certain events will automatically terminate an agency relationship. Since Mark expressly stated that the reason he was selling the estate was because he has lost so much money, any significant cash inflow to Mark apart from the sale of the estate will ultimately affect his decision to sell. As such, the lottery he won is a cash flow and since a vital condition for selling the estate has been breached. The contract is to be declared invalid.
