The most serious type of allergic reaction is
a. atrial fibrillation.
b. psoriasis.
c. anaphylaxis.
d. lupus.

The answer is letter C.

Anaphylaxis is a life-threatening allergic reaction. This is cause by hypersensitivity to allergens, usually through food or air pollutants by way of ingestion. Signs of anaphylaxis include, inability to breathe, tightening of the airway, and red spots on the skin. Upon the onset of this condition, medications must be administered to prevent further effects of hypersensitivity. If medications are not available, the person will need immediate professional help. If left untreated the person may lack oxygen in the brain which may lead to possible death.  

Ithink the answer is talking about their problems  

His goal is  achievable, realistic, measurable, and time-based. : )