Final answer:
A broker's bond is required for corporate, partnership, and individual broker licensees to ensure ethical and responsible operations.
Step-by-step explanation:
A broker's bond is an insurance policy that protects customers and clients against financial losses caused by improper actions of a broker. In the context of this question, the answer is A: Corporate broker licensees, partnership broker licensees, and individual broker licensees are all obligated to obtain a broker's bond. This requirement ensures that brokers operate ethically and responsibly.