Final answer:
The period of a wave is the time it takes for one complete wave cycle to occur. Option a) The time for one cycle is the correct answer.
Step-by-step explanation:
The period of a wave is the time it takes for one complete wave cycle to occur. It is represented by the symbol T and is measured in seconds (s). The period can be thought of as the time it takes for a wave to complete one full oscillation or for a wavelength to pass a fixed point.
In the options provided, option a) The time for one cycle is the correct answer. This is because the period of a wave refers to the time it takes for the wave to complete one full cycle.
For example, if you measure the time it takes for a water wave to go from one crest to the next crest, you would be measuring the period of the wave.