Which agency classifies hazardous materials in transport?

A sudden onset of respiratory distress in a 5 year old child with no fever most likely is the result of

A. infection of the lower airways B. inflammation of the upper airway C. a progressive upper airway infection D. obstruction of the airway by a foreign body

In directional terms, the ears are posterior and _______________ to the nose. 

Fill in the blank(s) with the appropriate word(s).