Which of the following i not an example of an uncontrollable risk factor?
a. level of sun exposure
b. ethnicity
c. age
d. heredity

I believe it's A. HOPE SO.

A.) level of sun exposure because you can control how much you go in the sun and how much of your body is exposed.

20 times a minute is usually the average respritory rate of an adult. additionally the patient is breathing on his own, is clearly maintaining his airway, and is intaking a sufficient amount of air. you shouldn't use a bag valve mask, cpap, or other form of positive pressure ventilation, unless the patient has lost control of his airway, and is not breathing (apneic) or has rapid breathing or slow and shallow respirations. this patient would most likely and should be put on an non-rebreather mask or nrb attached to 100% high flow oxygen at 15 l/min. don't use a nasal cannula, as the amount of oxygen it provides is limited with a rate of 6 l/min.