Final answer:
ESPN's unmatched coverage of the X-Games reflects the 'rarity' element in the VRIO framework, which provides them with a unique competitive advantage.
Step-by-step explanation:
The development of an extensive offering of X-Games coverage by ESPN is an example of the element of rarity within the VRIO framework. Rarity refers to how unique a resource or capability is when compared to the competition.
In the case of ESPN, their unmatched coverage of the X-Games represents a unique offering that competitors do not match, providing a competitive advantage. The extensive coverage of action sports like skateboarding, BMX, and motocross, attracts a niche audience that is not as easily reached by other sports outlets.