Question

which sentence does not contain any errors in comma usage

Answer 1

A.
California the most populous U.S. state, was once part of Mexico.







B.
Mrs. Walters, the new librarian, is from Arizona.







C.
Have you seen, Carrie my cousin, from Pittsburgh?







D.
My next-door neighbor Walt, is also an excellent climber

Answer 2

B.

Answer 3

B.