Final answer:
The assertion that pitch is determined by the fundamental frequency is true. The harmonics, which are multiples of the fundamental frequency, influence the quality of sound rather than the pitch itself.
Step-by-step explanation:
The statement about pitch being determined by the spacing of the harmonics and the repetition of the waveform that indicates the fundamental frequency is true. Pitch is perceived by our ears based on the frequency of the sound wave; a higher frequency leads to a higher pitch, while a lower frequency results in a lower pitch. The fundamental frequency is the lowest frequency of a sound, and this is what determines the pitch of a note.
Harmonics, which are integer multiples of the fundamental frequency, contribute to the timbre or quality of the sound but do not change the perceived pitch. For example, the first harmonic is two times the fundamental frequency, the second harmonic is three times the fundamental frequency, and so on, enriching the sound but still corresponding to the same musical note.