To identify a word whose main stress pattern matches that of the others in the list, let's look through the options provided.

1. **Physiology** - Primary stress on the third syllable: phy-si-OL-o-gy.
2. **Temporary** - Primary stress on the first syllable: TEM-po-ra-ry.
3. **Astrology** - Primary stress on the second syllable: as-TROL-o-gy.
4. **Voluntary** - Primary stress on the first syllable: VOL-un-ta-ry.
5. **Tradition** - Primary stress on the second syllable: tra-DI-tion.

Among these, **"apology"** from option 5 has a similar stress pattern to "physiology" and "astrology."

- **Apology** - Stress on the second syllable: a-POL-o-gy.

So for the first selection, "apology" matches the main stress pattern of "astrology" and "physiology."

If you have a specific word you would like to analyze from the other options in the list, let me know!