The most appropriate would be D or A. I don't see how wearing different shoes would help the clients knees.
Listening to the music at a loud volume .
Https://quizlet.com/12149291/chapter-12-the-cardiovascular-system-3-flash-cards/
This website could help you a ton! ^
The Sequence of the correct levels of organization for the multicellular organisms:
1.) Cells
2.) Tissues
3.) Organs
4.) Organ Systems
5.) Organisms