Your Approximate Heart Rate Should Be 100
You didn't really provide us with a list of the following diseases, however, it's safely to say that communicable diseases have many causes and they themselves are varied, with new types being discovered on a yearly basis. One type of organism which causes a communicable disease is a virus. However, they are not only limited to viruses!
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.
Aquatics may refer to: Aquatic sports in the Olympics and other international competitions, including the disciplines of swimming, diving, synchronized swimming, water polo, and open water swimming. Water-related sports more broadly (including boat racing, water skiing, swimming, etc.); see List of water sports.
The correct answer is option C.