Which of the following forms would indicate an unactivated (smooth) texture?

A solid form is characterized by its unactivated, smooth texture. This means that the hair is cut in a way that creates a uniform length all around, resulting in a sleek and polished appearance. In a solid form, there are no visible layers or movement, which contributes to its smooth texture.

In contrast, layered forms involve varying lengths that add dimension and movement, thus creating an activated texture. Textured forms also feature visible layers or cuts that provide more volume and dimension. Curled forms incorporate wave or curl patterns, contributing to a more dynamic and voluminous texture. Overall, a solid form stands out due to its simplicity and the absence of activation, making it the correct indication of an unactivated (smooth) texture.