Choose the word whose underlined part pronounced differently from that of the others by circling A, B, C, or D

Choose the word whose underlined part pronounced differently from that of the
others by circling A, B, C, or D:
1. A. claimed B. warned C. occurred D. existed
2. A. health B. appear C. ready D. heavy.
3. A. volcano B. make C. tidal D. crazy
4. A. visited B. looked C. needed D. persuaded
5. A. runs B. stands C. sleeps D. sprays