Which of the following is included in the definition of "advertisement"?

The definition of "advertisement" in the context of chiropractic practice includes various methods of promoting services, one of which is inside and outside signs. These signs serve as a visual representation of a chiropractic business and play a crucial role in creating visibility and awareness for potential patients. They provide essential information about the practice's services, location, and brand, helping to attract and inform customers in a direct and immediate manner.

Television commercials, direct mail brochures, and public speaking engagements are all valid forms of advertisement, but they serve different purposes and mediums. Television commercials are typically more transient and may reach a broader audience, while direct mail brochures provide information but do not have the same immediate local presence as signs. Public speaking engagements can effectively promote a chiropractor's expertise and services but are often less direct than signage, requiring more effort and engagement from interested individuals. Hence, the inclusion of inside and outside signs aligns closely with the fundamental understanding of advertisements in a chiropractic context, highlighting their importance.