Which of the following actions is permissible for licensed cosmetologists?

Wearing an ID tag is a permissible action for licensed cosmetologists because it serves to identify the professional to clients, enhancing both trust and professionalism in the salon environment. By wearing an ID tag, licensed cosmetologists help clients to confirm their qualifications and the legitimacy of the services being provided. This practice aligns with industry standards and regulatory requirements, promoting transparency and accountability.

In contrast, providing unlicensed services, serving alcoholic beverages, and using drugs on clients would violate established laws and ethical standards in the cosmetology profession. Each of these actions poses potential legal and health risks, making them strictly prohibited. Licensed cosmetologists must always adhere to regulations that promote client safety and well-being while maintaining the integrity of their professional practice.