Https://www.sciencelearn.org.nz/resources/1885-body-systems
It has all the answers to every system you need. I didn’t feel like typing it all out. But hope that helps
Answer:
How to describe general state of health?
“Health is a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity.”
<em>L</em><em>o</em><em>v</em><em>e</em><em>,</em><em> </em><em>g</em><em>o</em><em>c</em><em>r</em><em>y</em>

Blood is responsible for transportation of Oxygen in body which is the part of Cardiovascular system.
therefore, correct choice is :
- D.) Cardiovascular system
Pronation: the natural side-to-side movement
The most maintained home fitness equipment is the treadmills. Once or twice a
week, clean the motor cover and unprotected areas of the deck and its stop
button operation. Use vacuum to clean the motor electronic compartment and
underneath any treadmill that’s on the carpet once a month, this would help
keep treadmill machines away from carpet fiber. For treadmills with
programmed wax oil frameworks, check and clean the wax spout every month.
Try not to utilize cleaning solution to wipe the belt; this will disable
the lubrication framework. Each a few months, check the belt tension and
tracking and investigate the equipment (stray pieces), belt and deck for
wear each three to a half year.