Final answer:
c) Duplicating segments relate to the repeating pattern of octaves in the musical range of pitches, where the same note recurs at higher or lower frequencies on various instruments. The size of an instrument affects its pitch, with smaller instruments producing shorter wavelengths and higher pitches than larger instruments.
Step-by-step explanation:
The "duplicating" segments in the context of pitches found in nature refer to the repeating pattern of octaves in the range of pitches. When we say that musical notes have particular frequencies, this implies that the pitch of a note is perceived and can be named, such as A-sharp, C, or E-flat. Similarly, the duplicating segments relate to how these pitches recur at intervals that represent the same note at higher or lower frequencies; for example, middle C on a piano and the same note an octave higher or lower. Most musical instruments are capable of producing a range of pitches, and their size is directly related to the wavelengths of sound they produce. Therefore, small instruments create high-pitched, short-wavelength sounds, whereas large instruments produce low-pitched, long-wavelength sounds. The repetition or duplication in pitches across the range is a fundamental aspect of how music is composed and perceived, lending itself to the patterned and rhythmic nature of music.