Final answer:
A mix of diseases which involve chronic difficulties breathing, emphysema and/or bronchitis are grouped together under the name COPD disease.
The correct answer is options 2.
Step-by-step explanation:
A mix of diseases that involve chronic difficulties in breathing, such as emphysema and/or bronchitis, are grouped together under the name Chronic Obstructive Pulmonary Disease (COPD). COPD is a lung disease characterized by poor airflow due to the breakdown of connective tissues in the lungs which reduces the number and elasticity of alveoli.
This makes it difficult to fully exhale air from the lungs, resulting in trapped air and reduced gas exchange capabilities. Tobacco smoking is the most common cause of COPD, and while there is no cure, cessation of smoking can help reduce the progression of the disease.