How is this solved?! is it Essential or Non-Essential? [duplicate]
Solution 1:
The point of the question is not to set history straight but to test one's understanding of parenthetical commas.
Each answer differs in the placement of commas so as to set off the name of the scientist for special consideration. If you imagine the sentence read out loud you can hear how the commas function as pauses in speech to describe secondary details within the text. This can help with comparing one answer to another.