Student: Can we conclude from "A snowboarder leaves a trail of snow on the mountain." that "The snowboarder is doing a back flip."?
Options:
- yes
- no
- it is not possible to tell.
Teacher: Let's think:

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
One either leaves a trail or is doing a back flip. So the final answer is no.