I would say the answer is filters. They are responsible for showing entries that contain certain values according to the category you choose. For instance, you sort out the data by the date, when you choose from the filter list a certain date like jan 1, the sheet will be changed and will only show data for jan 1.
the answer is relative frequency ^^
Hello!
I believe the correct answer would be: Nonheme Iron.
I really hope my answer helped you! :)