If you’re talking about a literal vitamin then I’d say vitamin B-12 because this is usually stored int our liver for later reasonings.
If you include minerals as well, calcium is a main storage for your bones
The answer is b. I am not sure exactly how to explain this, but it fits in much better with that question. I hope this could help you!
Not completely sure, but maybe C.?
I say A not sure tho but I did get a grade 5 in biology
