Can an ostensibly misused comma before a coordinating conjunction actually be a parenthetical comma?
Consider:
Sally picked apples, and placed them in her basket.
This is considered a misuse of the comma, as the second clause is dependent. It should be
Sally picked apples and placed them in her basket.
or converted into "Sally picked apples, and she placed them in her basket" (the second clause is now independent).
Now consider:
Sally picked apples (and placed them in her basket).
Here the second clause as a parenthetical one, right? So surely you could write, equivalently:
Sally picked apples, and placed them in her basket.
where obviously, you omit replacing the closing bracket with a comma as it's the end of the sentence. What gives?
P.S. I have a feeling that either of
Sally picked apples (placing them in her basket).
Sally picked apples, placing them in her basket.
is a more accurate use of parenthesis, without knowing why.