who you are to get that, presumably. Although I suppose they could separate that scholarship application from the admissions packet, I doubt they do.
I also know that when I applied there was a spot on the application for parents and whether or not they attended BYU. That was a very long time ago though. But if you're LDS, they can probably find you pretty fast in the system if they wanted to. I have no idea if they go to that kind of trouble.