Final answer:
C) Nonsolicitation agreement.
Tony's agreement with Rachel's CPA firm is an example of a Nonsolicitation agreement, which is enforceable in a legal system that supports strong contractual and property rights to prevent economic slowdown.
Step-by-step explanation:
Tony and Rachel's employment contract includes a provision that prevents Tony from soliciting Rachel's clients if he leaves her employment.
This type of agreement is an example of a C) Nonsolicitation agreement. Such agreements are designed to protect a business's relationships and goodwill with its clients by limiting former employees' ability to use those relationships to their advantage and the disadvantage of their former employer.
In a society that upholds strong contractual rights and property rights, such arrangements are enforceable through the legal system. Without enforcement of contracts, there would be a higher risk of noncompliance, making people reluctant to enter into agreements, which in turn could impede business transactions and slow economic growth.