What are the healthiest oranges to eat?

I'm curious, could you elaborate on what you mean by "the healthiest oranges to eat"? Are you referring to specific varieties of oranges that are known to have higher nutritional value or perhaps oranges that are grown in certain regions that have better soil and climate conditions? Additionally, do you have any dietary restrictions or preferences that you're considering when asking this question? It would be helpful to have more context in order to provide an accurate and informative answer.