I'm not a sage nor a mentor but I think inference questions are just Must Be True questions! As JY says in those videos, "we have to push something out of the stimulus".
... helpful to ask a potential mentor? Things like which school to ... good questions to ask a mentor, but also knowing what area ... helpful information on what a mentor does. I hope this helps ... .com/en/what-does-a-mentor-do
If you’re still in undergrad, the prelaw advisor should be a good free resource to check over your PS. If you have good mentor relationship with a professor, that might be another option too.