Not all horseback riders are an amateur and file down a path does not imply to wear a helmet.
This justifies what answer for what question? Q & A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Premise: "Horseback riders file down a wooded path."
Hypothesis: "The amateur riders wear helmets for safety."
Do we know that the hypothesis entailed by the premise?
it is not possible to tell