How is "barbering" defined?

The definition of "barbering" encompasses a range of services that include cutting and styling hair, shaving, and grooming. This comprehensive description reflects the core skills and services provided by barbers in their professional practice. Barbering is not limited to just one aspect, such as hair coloring or the sale of beauty supplies, but rather covers a variety of techniques and treatments that cater to the grooming needs of clients.

Additionally, barbering is recognized as a profession that actively involves direct personal care and attention to a client's grooming, which further solidifies option A as the accurate definition. The other choices do not capture the full spectrum of services associated with barbering, making them insufficient representations of the field.