Answer:
personally I think it's a but it could also be D.
But yeah personally I would say A
Not sure of the choices, but the following need to be specified:
Iron
Copper
Silver
Cobalt
& others I haven’t listed
Answer:
Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb.
The electronic configuration is for iron (Fe) because if you add all those power up it will give you 26 and it’s the atomic number of Fe
Proton donor. Alkali metals have one electron that they want to give up to fulfill the octet rule (makes them stable)