"c" is incorrect.
http://data.grammarbook.com/blog/commas/commas-with-appositives/
Which of the following sentences uses commas with appositives correctly? (1 point)
a.Mr. Van Daan’s son, Peter, spent a lot of time with Anne.
b. Margot, Anne’s sister is the oldest.
c. Miep the one who helped them, stopped coming.
d.Mrs. Van Daan the selfish woman, always defends, her husband
i think it c right?
3 answers
if it not c it is a. because the commas is in the right spot?
Yes, "a" is correct -- TWO commas needed when it's in the middle of a sentence.