Dr. Danilo Ayala is diagnosing a patient who is having difficulties breathing. After a thorough examination, the doctor concludes that a foreign substance has irritated the patient’s respiratory pathways, and the pathways are constricted, making breathing more difficult. Which respiratory disorder would Dr. Danilo Ayala conclude is causing the patient’s symptoms? A)
emphysema

B)
bronchitis

C)
asthma

D)
pneumonia