Final answer:
A CPA is mandated to follow a code of professional conduct, adhere to professional standards, and sign audit reports but is not required to provide a percentage of services pro bono.
Step-by-step explanation:
When licensed as a CPA, an accountant is expected to adhere to a code of professional conduct, follow professional standards, and be accountable for signing audit or attest reports. However, providing a percentage of services pro bono is not a mandated responsibility for CPAs. Professional organizations, like the Institute of Electrical and Electronic Engineers Computer Society (IEEE-CS) in fields related to science and technology, lay out their own codes of ethics similar to those in accounting, defining concrete ethical obligations that intersect with broader moral questions and political debate.