Answer:
B). The route is handicapped accessible.
Step-by-step explanation:
As per the question, the most appropriate inference would be that 'the route is handicapped accessible.' The author includes the description of time for the fast runners to complete the route which implicitly connotes that 'handicapped people and wheelchair athletes are also present on the trail.' This makes the readers deduce that 'the route of 10 kilometers is approachable for the handicapped people.' This inference of the readers is confirmed by the author when the author explicitly brings the wheelchair athletes in the frame by stating that 'wheelchair competitors are not the only ones who compete at a world-class level.' Thus, option B is the correct answer.