asthma

A. acute respiratory failure in adults characterized by tachypnea, dyspnea, cyanosis, tachycardia, and hypoxia

B. disease caused by various conditions such as allergens and resulting in bronchospasm, excessive mucus production, inflammation, airway constriction, wheezing and coughing

C. a malignant tumor that originates in the bronchi

D. lack of oxygen that can lead to unconsciousness and death if not corrected immediately