Regular visits to the dentist should be scheduled every... (B. Six Months)
To be honest i think every sport should have some type of running, but i think the answer is swimming because you use your whole body and it is basically running just in water and the water makes you lightweight, so you don't feel like your working out even though you are.
Answer:
Cleaning.
Explanation:
Ultrasound are the high sound waves that has the frequency above than 20kHz. The ultrsonic sound can be detected by animals like bats and has medical importance as well.
The cleaning of the medical instruments and machines are done by ultrasonic cleaners. These cleaners uses the ultrasonic waves to clean the dirt and needs a proper solvent medium for cleaning. The cavitation bubbles are produced that are used for cleaning.
Thus, the correct answer is cleaning.