I would say that the two main things that need to be checked first are is the patients' heart ticking and are they breathing, keeping in mind that if the heart is stopped then immediate CPR would be necessary or if there is no breathing, clearing of the throat and mouth to mouth resuscitation would be recommended.
Answer:
it is C. Oxygen
Explanation:
You need more Oxygen when you are doing Aerobic exercises.
The factors that affect your health that you can control:
diet
exercise/being active
hygiene
mindset/attitude
lifestyle
medical care
etc
factors that are outside of your control:
genetics
environment (although it is in the hands of us humans, but a person alone can’t do much)
society/culture
Access to mass media and emerging technologies
The answer is true.........................