What is the name for the distance an AC signal travels during one complete cycle?

Wavelength is defined as the physical distance an alternating current (AC) signal or radio wave travels as it completes one full cycle. You can visualize it as the distance between two consecutive peaks of a wave. Other terms offered in the options refer to different concepts. 'Wave speed' is the velocity at which the wave travels through a medium (like the speed of light), not the length of a single cycle. 'Waveform' refers to the graphical shape of the wave, such as a sine or square wave. 'Wave spread' is a distractor with no standard technical definition in this context.