Which type of hair is likely to be affected by hormonal changes and may become darker and coarser?

Terminal hair is the correct answer because it is the type of hair that undergoes significant changes in response to hormonal fluctuations, particularly androgens. This type of hair is more coarse, thicker, and pigmented compared to other hair types. During puberty, for example, increases in testosterone can lead to the development of terminal hair in areas such as the face, chest, and underarms in both males and females.

Vellus hair, in contrast, is fine, short, and typically unpigmented, and it is not significantly affected by hormonal changes to the same extent as terminal hair. Lanugo hair is a type of fine, soft hair that covers the fetal body, which usually falls out before birth and is not influenced by adult hormonal changes. Androgenic hair is not a separate type of hair; instead, it refers to terminal hair that is influenced by androgens. Therefore, while it is relevant to the discussion, terminal hair specifically describes the final outcome of that hormonal influence, making it the correct choice in this context.