Which of the following describes the duration of symptoms for bronchiolitis?

The duration of symptoms for bronchiolitis typically lasts between several days to weeks, which aligns with option B. Bronchiolitis is commonly caused by viral infections, particularly in young children, and the progression of the illness generally involves a gradual onset of symptoms such as cough, wheezing, and difficulty breathing. The acute phase usually persists for about a week, but it may take longer for symptoms to completely resolve. This timeframe reflects the body's response to the viral infection and the subsequent inflammation of the small airways, which contributes to the longer duration of symptoms compared to other, more acute respiratory issues.

In contrast, symptoms lasting only a few hours or subsiding in two days would not accurately represent the typical course of bronchiolitis, as it usually requires a longer timeframe for recovery. Chronic symptoms are also not characteristic of bronchiolitis, which is primarily an acute infection rather than a lasting condition.