Final answer:
The contract is enforceable because the option to cancel includes a termination payment of $2,000, serving as valid consideration.
Step-by-step explanation:
The contract between The Plaza Hotel and EZ Lawn includes a clause that allows The Plaza to terminate the contract with a termination payment of $2,000. This clause does not make the contract an illusory promise because the promise of EZ Lawn to mow the grounds is a real commitment, and the option to cancel provided to The Plaza is accompanied by the requirement to pay $2,000, which constitutes valid consideration. Thus, the correct answer is that the contract is enforceable because the option to cancel clause is supported by consideration.