Answer:
A. Mucus secretions that block airways
B. Inflamed airways that obstruct airflow
E. Overinflated alveoli that impair gas exchange
Explanation:
Chronic obstructive pulmonary disease (COPD) is considered a very dangerous illness, affecting over thirty two million people in the United States. It has a high mortality rate and is considered the third leading cause of death in the United States. Patients suffering from COPD usually have symptoms of damaged alveoli which impairs exchange of gas, chronic bronchitis or severe mucus secretion which blocks airways and asthma or inflamed airways obstructing the flow of air.
The complete adjective clause in the sentence is F. that I have prepared.
An adjective clause usually starts with who, whom, when, where, why, that or which. Most often it provides more information and description; however, it will not change the meaning of the sentence.
