Final answer:
The correct answer is c. Spectrum. It refers to a method of showing the intensity of the various component frequencies in a sound wave.
Step-by-step explanation:
The correct answer is c. Spectrum.
In the context of displaying complex sounds, a spectrum refers to a method of showing the intensity of the various component frequencies represented at a given moment in time. It is used to analyze and visualize the different frequencies present in a sound wave. By representing the frequency spectrum of a sound, we can identify the components that make up the complex sound.