Final answer:
RSV is highly communicable and can spread easily among children; therefore, the infected child should be separated from the older child to prevent transmission. Hospitalization is not always necessary for RSV, as many cases are mild.
Step-by-step explanation:
Understanding Bronchiolitis and RSV
Respiratory syncytial virus (RSV) is a common cause of bronchiolitis, especially in infants and young children. The correct answer to the question is D. The children should be separated to prevent the spread of infection. RSV is highly communicable and can be transmitted through droplets from coughing and sneezing, and indirect contact with contaminated surfaces. Older children and adults can also contract RSV, but the symptoms are typically milder and resemble a common cold.
Regarding hospitalization, not all cases require admission. Severe cases, especially in young infants, might need hospital care, but mild cases can be managed at home with proper care and isolation to prevent spreading the virus.