Final answer:
True, written notice can be served by Commission personnel personally or sent via mail to the business's last known address, which is standard for legal notices.
Step-by-step explanation:
True, written notice may be served either personally by Commission personnel or by mail to the last known business address. This is a common practice in legal and regulatory procedures, ensuring that entities are properly informed about actions or requirements that may affect them. Personal service means that a Commission representative delivers the notice directly to the recipient. When the notice is sent through the mail, it is typically sent to the address that the business has on file with the Commission, which is why it is imperative for businesses to keep their contact information up-to-date with regulatory bodies.