To accurately describe the relationship between the variables shown on the graph, it would be helpful to have specific details or the visual representation of the graph itself. However, based on common economic principles, if the graph shows a typical downward-sloping demand curve, the relationship would most likely be:
C. As ticket prices increase, the number of tickets sold decreases.
This is because, generally, as prices rise, demand tends to fall, leading to fewer sales. If you have more information or a description of the graph, please provide that for a more precise answer!