Choose the word whose underlined part is pronounced differently

Choose the word whose underlined part is pronounced differently.
31(u). A. population B. studio C. punctuality D. mutuality
32(e). A. temper B. resistance C. section D. preference
33(ed). A. missed B. worked C. realized D. watched
34(ays). A. says B. bays C. days D. rays
35(s). A. repeats B. coughs C. amuses D. attacks