Answer:
kidney
Explanation:
Urea is carried in the bloodstream to the kidneys. The kidneys are bean-shaped organs about the size of your fists. They are near the middle of the back, just below the rib cage. The kidneys remove urea from the blood through tiny filtering units called nephrons.
I believe a. is the answer
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I believe that item is: Defibrillator
The recommendations that made by ANSI are the items that could be used even in small working sites.
Defribrilators requires a pretty huge amount of electrical supply which make them unable to be brought to small working sites.
No they are most likely to not wear seat belts