Final answer:
Martyn Ashton can stay involved in mountain biking after paralysis by coaching, writing about it, or designing inclusive biking equipment.
Step-by-step explanation:
The question pertains to how Martyn Ashton, who was paralyzed in a trail biking accident, continues to stay involved in the sport. Despite his disability, there are several ways that individuals like Ashton can remain active within the biking community. This can include coaching other bikers, writing about the sport of mountain biking and trail riding, or even designing biking equipment that may be more inclusive or tailored to the needs of riders with disabilities. Involvement in these activities is crucial for maintaining a connection to the sport, providing insights from a unique perspective, and contributing to the biking community in meaningful ways.