Here are the answers for each of the questions based on the pronunciation of the underlined parts:

1. **C. hospitable** (The "a" is pronounced as /ə/ while the others have an /æ/ sound)
2. **A. tortoise** (The "o" is pronounced as /ɔɪ/, while the others have a long /oʊ/ sound)
3. **B. manage** (The "a" is pronounced as /ə/, while the others have an /æ/ sound)
4. **A. documentary** (The "c" is pronounced as /k/ while the others have an /s/ sound)
5. **C. soy** (The "s" has a different sound compared to the others, which have a /s/ sound)
6. **A. ache** (The "ch" is pronounced as /k/, while others have a /tʃ/ sound)
7. **D. hinder** (The “i” is pronounced differently compared to the others where it sounds like /aɪ/)
8. **C. brave** (The "a" is pronounced as /eɪ/, while the others have an /æ/ sound)
9. **D. electricity** (The "e" is pronounced differently, while the others have an /ɛ/ sound)

Let me know if you need further assistance!