Sentence Correction (SC) | Whether everyone, from children to senior citizens, benefits similarly

I am skeptical of theOA.
as well as is not a substitute forand .
Whereasand + NOUN in a list implies that the NOUN is essential to the meaning of the sentence, anas-well-as modifier is NONESSENTIAL.
If we remove theas-well-as modifier and other nonessential modifiers from the OA, weget:
Whether everyone benefits similarly from consuming added protein while weight training and just how much protein is ideal are all open questions.
Here, the usage ofall implies that there are more than two