Stumbled over the same question's wording.
As of quote from the comments: "priority of the segmentation is Celery > Beets > Broccoli > Carrots"
This is not stated in the question. It can only be inferred from the order in the list. Although it works in this case, the priority could be set in any different order by the mentioned marketing team. There is no relation stated between the segmentation priority set and order in the list displayed.
@KevinH ,
yep - the presentation of the question is poor. The question setter expects you to assume the priority of the segments runs from top to bottom without ever stating it.
Cheers
Jo