Final answer:
The correct answer is d) the client's investment goals are met.
Step-by-step explanation:
The correct answer is d) the client's investment goals are met. All other options terminate a brokerage relationship. When the broker's commission is paid in full or the client decides to end the relationship, the brokerage relationship is terminated. If the brokerage firm goes out of business, the relationship also comes to an end. However, if the client's investment goals are met, the brokerage relationship can continue.