What common client request might involve layering techniques?

The layered haircut technique is frequently associated with styles that incorporate varying lengths of hair to create texture and movement. A "shag" haircut is particularly known for its layered approach, which typically features shorter layers on top and longer layers underneath. This combination allows for a more voluminous and tousled look, making it versatile for different hair types and textures. The use of layering helps to enhance the overall style by adding depth and dimension, which is a signature characteristic of the shag haircut.

In contrast, the other styles listed tend to consist of uniform lengths or minimal layering. For example, a "buzz" haircut is achieved using clippers for a close-cropped style without any layers. A "crew" cut similarly involves a short, uniform length on the sides and back, with a slightly longer top, creating a clean-cut appearance without the need for layering. Lastly, a "bowl" cut features a blunt, even line around the edges, lacking the textural and dimensional effects that layering provides. Therefore, the layered technique is most relevant to the shag haircut, making it the correct choice.