A mix of both. You'd need both healthy fish and chicken, because I believe chicken provides iron? I'm not sure, and fish is important to your diet as well.
Physical Appearance I would say because what you look like helps people understand you a bit but doesnt totally describe who you are.
Answer:
it depends on the person, for me least challenging in online school because of my social anxiety! but hybrid may be a better option for those who can't concentrate! but I would say hybird, is less challenging! even though I prefer online!! I hope this helped! <3