Answer: ternary
Explanation:
If a piece of music is divided into three sections, and the first and third are basically the same, and the middle section contrasts the first one, this is referred to as a ternary.
Ternary form, is also referred to as a song form, and it has basically three parts which are the opening section, the following section while the last one is just the repetition of what is contained in the first section.
