Answer:
To learn more.
Explanation:
Scientists want to know the advantages and downsides of it, like any other invention. To see if it can replace something else and be safer.
Skill related fitness abilities, also known as performance fitness, is the ability to preform during games or sports. Physical related fitness abilities refers to your ability to perform physical tasks efficiently in day to day activities. I hope that helps!
B. A cushioned here cup to protect the heel from impact
The answer is the thoracic cavity