What is the most logical next event?

How to recognize and treat kawasaki disease 
Realize the risk factors. 
Currently, there is no known scientific cause for this disease, but there are several factors which may increase the chances of getting it. 
Children under five are most at risk, particularly ages 1 to 2.

Pick your answer from:
 (1). Older children between the ages of 19 and 60 years old are at greater risk of this medical disease. Teenagers over the age of 44 are considered twice as vulnerable.
 (2). Adults over the age of 5 are at higher risk. Because of this, certain vaccines are also particularly helpful for individuals younger than 5 years old.
 (3). Infants who are currently under the age of five when they are already pregnant are at higher risk to get the disease. People younger than five years old are at higher risk, also at birth.
 (4). It is not contagious in any way. Boys are more likely, only slightly, to develop the disease.
(4).