There are many latchkey children in the United States. In fact, according to the US Census, what percent of all children between the ages of 6 and 14 routinely spend
time alone in the home without adult supervision?
5
10
15
20

What link in the chain of transmission is described in the paragraph? sarah has been eating and sleeping poorly. she was just diagnosed with pneumonia. tests showed the illness was caused by streptococcus pneumoniae. in the chain of transmission, sarah is the (blank) , and streptococcus pneumonia is the (blank).