"Amount of time taken by one complete cycle" is the definition of which of the following terms?

The term that refers to the "amount of time taken by one complete cycle" is known as the period. In the context of wave phenomena, the period is the duration it takes for one complete oscillation or cycle of a wave to pass a given point. It's a key parameter in understanding wave behavior, as it directly relates to the frequency of the wave, which is the number of cycles that occur in a unit of time.

The frequency is the reciprocal of the period, meaning that as the period increases, the frequency decreases, and vice versa. Therefore, while frequency and period are closely related, the specific definition given in the question aligns appropriately with the term period. This distinction is crucial in fields such as electronic warfare, where the understanding of wave properties is fundamental.

Polarization refers to the orientation of oscillations in a wave, and wavelength denotes the distance between corresponding points on consecutive cycles of a wave. These terms do not describe the time taken for one complete cycle. Thus, they are not applicable in this context.