Answer:
a) Stakeholder interests
b) Codes of ethics
Step-by-step explanation:
Legally a firm is to act in the best interest of its shareholders at all times. This therefore applies to Business communication which should be done only in a way that will best serve stakeholder interest with anything else being a potential breach of legality.
The firm's Code of Ethics is meant to lead the firm in an ethical manner and so they must abide by it in Business communication to ensure that the process is ethical by their own definition.