Which of the following is NOT a possible cause of airway obstruction?

Vascular retinopathy is a(n) ________disease in which the retina has become damaged

A) non-inflammatory B) inflammatory C) hereditary D) metabolic

A thick glass carboy that is protected by a wooden or foam crate is most likely to contain a(n) _____.

a. Pesticide b. Combustible c. Corrosive d. Oxidizer