Here are the words from the first set that are pronounced differently:

1. **A. effect** (the 'e' is pronounced as /ɪ/)
2. **B. photo** (the 'ph' is pronounced as /f/)
3. **C. hotel** (the 'o' is pronounced as /oʊ/)
4. **A. eat** (the 'ea' is pronounced as /iː/)
5. **A. eight** (the 'ei' is pronounced as /eɪ/)
6. **A. water** (the 'wa' is pronounced as /wɔ/)
7. **A. sit** (the 'i' is pronounced as /ɪ/)
8. **A. fifty** (the 'i' is pronounced as /ɪ/)
9. **B. about** (the 'ou' is pronounced as /aʊ/)
10. **A. question** (the 'qu' is pronounced as /kw/)

For the second section, the words stressed differently are:

1. **A. begin** (stress on the second syllable)
2. **B. collect** (stress on the second syllable)
3. **A. protect** (stress on the second syllable)
4. **A. water** (uncommon stress)
5. **A. plastic** (stress on the first syllable)
6. **A. combine** (stress varies with meaning)
7. **A. damage** (stress on the first syllable)
8. **A. issue** (stress can vary)
9. **A. dirty** (stress on the first syllable)
10. **A. occur** (stress on the second syllable)

You can check these pronunciations and stress patterns to find the odd one out in each category.