The correct options related to the basics of music are as follows:
1. a. motive
2. c. form
3. b. phrase
1. The motive or the motif is the smallest independent unit of a short musical thought. It is the small piece of music that appears repeatedly in the song, and this motif of the musical note can make the entire song popular.
2. The design or the arrangement of the basic elements of a musical piece is known as form of music. The form of the music denotes the specified structure of a musical composition or it can be a form for an entire performance.
3. The musical sentences made by combining the motives to form a complete musical idea is known as a phrase. The phrase in the music is the sentences or a couple of sentences. These phrases are reproduced and they vary based upon the course of composition.
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