Question

chronic bronchitis and emphysema are referred to collectively as _______________.
pleurisy
chronic obstructive pulmonary disease (copd)
whooping cough
pertussis

Explanation:

Chronic bronchitis and emphysema are main types of COPD. Other options are different respiratory - related conditions. Pleurisy is inflammation of pleura, whooping cough and pertussis are the same condition caused by Bordetella pertussis bacteria.

Answer:

B. chronic obstructive pulmonary disease (COPD)