I believe the three choices that are correct would be A) B) and D)
When a patient is unconscious( without a pulse) CPR should be performed.<span />
Registered health information technicians, registered health information administrators and certified health data analysts typically worked in Health care facilities and health care providers. Unless some companies like business companies are in need of health related professionals, then they would be working for such companies.
B. is your best answer
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You can only see it if you use a microscope and you cannot taste it or smell it