Choose the word in which the underlined sound is pronounced differently from the others

choose the word in which the underlined sound is pronounced differently from the others.
1.A.pour    B.neighbour   C.labour    D.colour
2.A.donated           B.provided                  C.flooded            D.changed
3.A.saved           B.interested                    C.volunteered          D.disabled
4.A.hobby           B.about                  C.collect              D.player
5.A.helped            B.worked                 C.reduced                D.followed