Final answer:
The author uses the reference to Pandora's box to convey the idea of chaos and unforeseen consequences.
Step-by-step explanation:
The author uses mythology in the sentence 'without a watchdog group the sport would become a Pandora's box' to convey the idea of chaos and unforeseen consequences.
The reference to Pandora's box is a metaphor derived from Greek mythology, where opening the box unleashed all the evils of the world. By using this reference, the author suggests that without a watchdog group, the sport will become uncontrollable and lead to negative outcomes.