The correct answer is C. Sawtooth wave.
A sawtooth wave is a type of non-sinusoidal wave that has a sharp rise and a gradual fall. It is often used in oscilloscopes to display the waveform of a signal. The horizontal plates of a CRO are supplied with a sawtooth wave so that the electron beam can sweep across the screen from left to right. This allows the user to see the waveform of the signal as it changes over time.
A sinusoidal wave is a type of wave that has a smooth, continuous curve. It is often used to represent a sine function. A cosine wave is a type of wave that is similar to a sine wave, but it is shifted by 90 degrees. A sawtooth wave is a type of wave that has a sharp rise and a gradual fall. It is often used in oscilloscopes to display the waveform of a signal.
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