Colorado Cosmetology Written Practice Exam

Proportions are important to consider when designing a hairstyle because it helps achieve balance and symmetry. Option B, hair texture and length, is not necessarily directly related to proportions. It can play a role in the overall look of the hairstyle, but it does not directly affect proportions. Option C, facial features, also plays a role in the overall look, but it does not necessarily affect proportions. Option D, eye color, is not relevant to proportions and should not be considered when designing a hairstyle. Therefore, option A, client's body shape and size, is the most critical factor to consider in order to achieve a well-proportioned and visually pleasing hairstyle for the client.