Which of the following is true regarding the appearance of the manager's license number on company materials?

The requirement for the manager's license number to appear on company materials, particularly on stationery and advertising, is rooted in regulatory compliance and professional transparency within the mortuary science field. This stipulation helps ensure that consumers and clients can verify the legitimacy and qualifications of the business providing funeral services. Displaying the manager's license number prominently reinforces accountability, instills trust among clients, and adheres to the professional standards set forth by state regulations.

In contrast, the other options do not align with regulatory requirements for professional practice. The size designation is not universally mandated, informal materials may not necessitate the license number for branding purposes, and small firms typically do not have the flexibility to omit this important identification metric, as it applies to all funeral service providers to maintain uniform standards.