Ternary form consists of how many sections?

• A. Two sections
• B. Three sections
• C. Four sections
• D. Five sections

Answer: (B)

Ternary form is a three-part structure: you hear an opening material (A), then a contrasting middle section (B), and finally a return to the opening material (A). The returning A ties the form together and gives a sense of completion, while the B section provides contrast in mood, key, or theme. Because of this exact A-B-A layout, the form is characterized by three sections. This differs from binary form, which has two parts (A then B), and from forms that move through continuous new material without returning to the initial idea.