Which of the following is considered a common respiratory system problem?

Asthma is widely recognized as a common respiratory system problem because it directly affects the airways in the lungs, leading to symptoms such as wheezing, shortness of breath, chest tightness, and coughing. It is a chronic condition characterized by inflammation and narrowing of the airways, making it difficult for air to flow in and out of the lungs. This condition can be triggered by various factors including allergens, irritants, and respiratory infections, making it prevalent in both adults and children.

On the other hand, while fractured ribs can impact breathing due to pain and restricted movement, they are not classified as a respiratory system problem but rather as an injury. Allergies can cause symptoms that affect the respiratory system, like nasal congestion or itchy eyes, but they are primarily immune responses rather than direct respiratory conditions. Anemia, a condition characterized by a lack of healthy red blood cells, affects the body's ability to deliver oxygen and is not specifically a respiratory issue. Therefore, asthma stands out distinctly as a typical issue within the respiratory system.