Here are the answers for the questions:

**I.** The words with different pronunciation of the underlined part are:

1. **D. lifestyle** (the "style" part has a different vowel sound compared to the others).
2. **A. virus** (the "vi" part has a different vowel sound compared to the others).
3. **A. university** (the "u" in university is pronounced differently compared to the others).
4. **C. needed** (the "ee" in needed has a long vowel sound, while the others do not).

**II.** The word that has a different stress pattern from the others is:

1. **B. slowly** (it has the stress on the first syllable, while the others have stress on the second syllable).

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