Which of the following is a lung disease in which breathing becomes difficult, and in some cases impossible?

Chronic obstructive pulmonary disease (COPD) is a lung disease that obstructs airflow, making breathing difficult and, in severe cases, potentially impossible without assistance. Coronary artery disease affects the heart’s blood vessels, cirrhosis damages the liver, and arrhythmia is an abnormal heart rhythm. Therefore, the correct choice is chronic obstructive pulmonary disease.

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