Reye's syndrome is a rare and severe illness affecting children and teenagers. Its development has been linked with the use of aspirin and which of the following?
Correct Answer: D
Rationale: Reye's syndrome is a rare but serious condition that primarily affects children and teenagers. It is characterized by swelling in the liver and the brain. The development of Reye's syndrome has been linked with the use of aspirin during viral infections, particularly influenza and varicella (chickenpox). Therefore, the correct answer is D. Varicella. It is crucial to avoid giving aspirin to children and teenagers during these viral infections to reduce the risk of developing Reye's syndrome.