Which percabeth daughter will most like to going to be a cheerleader?
Hmmm. Honestly, I don't really see that for any of them, but that might be an author limitation. I was never the cheerleader sporty kid.
Sophia I think is the most natural answer. She's the outgoing blonde kid. She kind of matches the type. But I do think that she would get bored of it if she wasn't doing the high intensity competitive cheer. If she was just doing your average high school cheer team, where most of the work is dancing and chanting with a few stunts, I don't think she'd be that interested in it.
The other one I could imagine is Rosie, because Rosie's personality is a little bit based on my sister, who was a varsity cheerleader. My sister did cheer from a very young age through senior year of high school, but she was never a super peppy kid, she was very sassy and a bit mean (to me specifically), but there she was every Saturday cheering on the football team and doing a great job.
I don't mean to be disparaging to cheerleaders, by the way. I have always been on team "cheer leading is a sport.," and I have huge respect for it. I've just never thought of it as a thing that these characters might do.