Final answer:
Andrea must secure permission from all clients before listing them as part of her professional experience to future employers, with respect to the Code of Professional Conduct's confidentiality requirement.
Step-by-step explanation:
According to the Code of Professional Conduct, Andrea must maintain the confidentiality of information acquired during her service as a CPA. This confidentiality rule extends beyond her period of employment at Credit & Balance, CPAs. Therefore, Andrea needs to ensure that any disclosure of her professional engagements, including a list of companies she has worked with, does not result in the release of confidential client information. This means that she must secure permission from all clients before including them on any such list she provides to future employers, regardless of whether the clients are privately or publicly held companies.