Final answer:
Whether bold hairstyles, body art, and piercings are engaging to customers depends on the workplace context and audience. While these can be a popular form of self-expression and have historical significance, their appropriateness is not universal across all service industries.
Step-by-step explanation:
The statement that bold hairstyles and colors, body art, and piercings are a popular form of self-expression used by a server to engage customers can be true in some situations. However, whether it is appropriate or engaging to customers largely depends on the context of the workplace and the audience being served. For instance, in a creative or artistic environment, such expressions might be encouraged and appreciated, whereas in a traditional or conservative setting, they might be discouraged. Body art, such as tattoos and piercings, has been used historically in various cultures for self-expression, identity, and even social status, as evidenced by the earliest ancient African mummies and Indigenous Australian peoples. Thus, in a modern setting, these forms of body art can indeed be a means to engage with others, but it is not universally applicable to all service-oriented roles or customer interactions.