It's not your decision, usually. It's your dd's, within the option blocks the school offers, & assuming the school ratifies her choices.
Of course, you can move school if you aren't happy with the curriculum. Or you could quietly tell your dd that you agree that art isn't her thing, & to coast gently whilst concentrating on those subjects you & she consider more important.
However, on a wider scale, if you 'withdraw' your dc from a course (or if I as a teacher want to kick a student off a course, but that's a different thread...) - what is then to be done with your dd's time?
She could change to a different option group (timetable might not work out, or it might be full, or she might have missed too much already), or just 'drop out' of a subject. No Head is going to be thrilled by the latter possibility - it dents the school's results, & creates a supervision issue.
So no, not quite as simple as it being your choice. The school does have a right to expect your dd to follow an approved programme of study.