What type of haircut is referred to as "one-length"?

A "one-length" haircut refers to a style in which all the hair is cut to the same length, creating a uniform appearance without any layers. This approach emphasizes the weight and density of the hair, making the strands fall together in a straight line at the ends.

The blunt cut is characterized by its clean edges and lack of graduation, which contributes to its strong and polished look. This contrasts with other cutting techniques where the hair is layered or styled with different lengths, such as the layered cut, which adds movement, or the textured cut, which creates a more lived-in or shaggy appearance. The shag cut is another popular style that incorporates multiple layers and can involve varying lengths, adding volume and texture but not adhering to the "one-length" criteria that the blunt cut follows. Thus, the blunt cut stands out as the correct answer in this context.