Answer:
Correct option : (c) period.
Step-by-step explanation:
The time that is required for a vibrating object to complete one full cycle is called the time period. If f is the frequency of a wave, then the relation between the frequency and the time period is given by :
![T=(1)/(f)](https://img.qammunity.org/2020/formulas/physics/high-school/4gkvo9cbwtyubqfj0j1ztw08v8hhkh0bto.png)
These are the characteristics of a wave. Some other characteristics are wavelength, amplitude, intensity etc. So, the correct option is (c) "period".