Help please. Which sentence is punctuated correctly?
A.
Of all his friends Jack, Mia, Louis, Jack was the only one he had known since kindergarten.
B.
Of all his friends Jack, Mia, Louis—Jack was the only one he had known since kindergarten.
C.
Of all his friends—Jack, Mia, Louis, (Jack) was the only one he had known since kindergarten.
D.
Of all his friends (Jack, Mia, Louis), Jack was the only one he had known since kindergarten.

B. Of all his friends Jack, Mia, Louis—Jack was the only one he had known since kindergarten.

Explanation:

You can read the answers out loud to see which one makes the most sense.

Of all his friends (Jack, Mia, Louis), Jack was the only one he had known since kindergarten.

Explanation:

The phrase "Jack, Mia, Louis" is considered nonessential. This means that it does not change the meaning of the sentence if it is removed. The phrase is correctly set apart from the sentence by a pair of parentheses. Commas and dashes are other ways to set off nonessential phrases.