as much as jonolad is being a bit rude about it, as a hsc 2023 he’s not really wrong. other than the few subjects which are generally treated as prerequisites for some courses such as maths advanced it really doesn’t what subjects you do in high school in terms of future relevance. anything relevant to eg physio that isn’t in its specifically labelled prerequisites or assumed knowledge will be retaught in uni anyway, and the universities wouldn’t add it as one since that would mean a major uni syllabus shift for the physio subjects which doesn’t really happen much, especially to a subject which they know many people in the course won’t have already be doing. beyond subjects directly labelled as prereqs/assumed people should choose subjects which are interesting to them because this is what will make them do well and get a high atar
this isn’t to say she shouldn’t do pdhpe by the way, if that’s what she finds interesting then it could be a good choice for her and there’s nothing wrong with that