Here are the words that have a different stress pattern from the others in each group:

1. **C. effect** - The other words have stress on the second syllable (af-FECT, po-LUTE, etc.), while "effect" has stress on the second syllable (ef-FFECT).

2. **A. cholera** - The other words (pollutant, political, measurement, historic) have stress on the second syllable, while "cholera" has stress on the first syllable (CHO-lera).

3. **A. radiation** - The other words (pollutant, political, measurement, historic) generally have stress on the second syllable, while "radiation" has stress on the third syllable (radi-A-tion).

4. **A. seriously** - The other words (measurement, historic, scientific, physic) have stress on the first syllable, while "seriously" has stress on the first syllable but is distinct in overall rhythm.

5. **D. bonical** - The other words (aquatic, logical, contaminant) generally have second syllable stress.

In summary:
1. C. effect
2. A. cholera
3. A. radiation
4. A. seriously
5. D. bonical