Which of the following is the most common cause of death in middle adulthood? . a. suicide. b. homicide. c. heart disease. d. stroke. e. cancer

I would say c but I would have to read your text book to be able to answer it accurately

The correct answer of the given health question above would be option C. Heart disease has been the most common cause of death in middle adulthood. Most of the diseases that middle-aged people experience during this time are chronic diseases and most of these diseases include heart diseases and may also result to stroke. 

Can you explain it well?

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.