Which of the following describes the four types of hair texture?

The correct choice outlines the four fundamental types of hair texture recognized in cosmetology: straight, wavy, curly, and coily. These categories help professionals understand how to approach hair styling and treatments based on the natural characteristics of a person's hair.

Straight hair lies flat, has a shiny appearance, and tends to be smooth. Wavy hair exhibits a slight curl pattern that forms loose waves, providing added volume and texture. Curly hair features a more defined curl structure, which leads to bounciness and a thicker appearance. Coily hair has tight curls or zigzag patterns, often resulting in a denser look and requiring unique care and styling techniques to maintain its health and appearance.

Understanding these distinctions is essential in tailoring hair care practices and recommendations, as each hair type responds differently to products, tools, and styling methods. The other choices focus on different aspects of hair such as color, texture quality, or cutting styles rather than the primary classification of hair types, which is why they do not provide the correct depiction of hair texture categories.