Here are the words with the underlined parts pronounced differently in each line:

1. **C. blame** - The "a" in "blame" is pronounced like /eɪ/, while the "a" in the other options is pronounced like /æ/.

2. **C. climb** - The "b" is silent in "climb," while it is pronounced in the other options.

3. **B. blond** - The "o" in "blond" is pronounced like /ɒ/, while in the others, it varies (like /əʊ/ in "globe" and /ɔː/ in "clothing").

4. **C. fluffy** - The "u" in "fluffy" is pronounced like /ʌ/, while the "u" in "club" has a different sound.

5. **B. gloop** - The "oo" in "gloop" is pronounced like /uː/, whereas in "flood," it is pronounced like /ɒ/.

Thus, the selections are:
1. C
2. C
3. B
4. C
5. B