There is an agreement not to compete in Mary's employment contract that prohibits her from operating her own business, or working for a competing business, anywhere. The prohibition is to last for 15 years. What is the most likely result if Mary defends against this agreement in court?

a. The agreement will be enforced because of freedom of contract.
b. The agreement will be enforced because Mary is bound by the duty of loyalty.
c. The agreement will not be enforced because it violates the Fourteenth Amendment.
d. The agreement will not be enforced because it violates state public policy.

Answer: d. The agreement will not be enforced because it violates state public policy.