Daniel’s doctor is trying to determine the cause of his recent onset of asthma symptoms. Of the information Daniel provided, which would his doctor find most helpful in determining a cause?

A pattern linking symptoms to cross-country practice can help the doctor identify a trigger, such as exercise or something encountered during practice. Knowing that symptoms are new or that shortness of breath is the worst symptom does not point to a specific cause. A sister’s asthma may suggest inherited risk, but the practice-related pattern is more directly useful for investigating what brings on Daniel’s symptoms.

AI-written and checked against the verified answer.