Here are the words with the underlined part that has a different pronunciation:

1. A. safety B. vitamin C. parade - **B. vitamin** (the "vit" in vitamin is pronounced with a short 'i' sound, whereas 'a' in safety and 'are' in parade have a different pronunciation).

2. A. condition B. protect C. tofu - **C. tofu** (the "to" in tofu is pronounced with a long 'o,' whereas 'cond' in condition and 'pro' in protect have different vowel sounds).

3. A. maturity B. teenager C. orphanage - **C. orphanage** (the "or" in orphanage is pronounced differently compared to the "ma" in maturity and "teen" in teenager).

4. A. tutor B. volunteer C. student - **A. tutor** (the "tu" in tutor is pronounced with a long 'u,' while "vol" in volunteer and "stu" in student have different vowel sounds).

5. A. developed B. planted C. invited - **A. developed** (the "de" in developed has a different vowel sound compared to the "plan" in planted and "in" in invited).

So the answers with different pronunciations are:

1. B
2. C
3. C
4. A
5. A