Here are the words from the list that have different sounds in the underlined part:

1. **C. junk** - The sound of "u" is different from "put" and "adult."
2. **B. identify** - The sound of "i" is different from "chemical" and "children."
3. **C. aerobics** - The sound of "a" is different from "headache" and "really."
4. **B. spread** - The "ea" sound is different from the "a" in "cycling" and "headache."
5. **C. junk** - The sound of "u" is different from "flu" and "yash."
6. **B. wear** - The "ea" sound is different from "wash" and "enough."
7. **B. enough** - The "ough" in "enough" has a different sound than "kind" and "ride."

You can identify specific answers as needed, but these are the variations you can find in the words provided.