Binary form in which the first section or all of it returns in the tonic in the latter part of the second section is called

• A. Ternary Form
• B. Rounded Binary Form
• C. Binary Form
• D. Through-composed Form

Answer: (B)

Rounded Binary Form is a binary structure where the opening material returns in the latter portion of the second section, giving a sense of closure by ending in the tonic. The first section sets up a tonal idea in the home key, then moves to a contrasting section in a new area. As the second section unfolds, a recollection or partial restatement of the opening idea appears toward the end, and the final cadence lands in the home key. This return of familiar material toward the end is what makes the form feel rounded.

This differs from simple binary, where the second section moves away and ends in the new key without bringing back the opening material. It also differs from ternary form, which typically presents a full restatement of the opening material in a separate third section. In rounded binary, the return is integrated toward the end of the second section rather than as a distinct third section.