Which type of volcanic eruption is characterized by the most explosive activity and high-viscosity lava?

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Accepted Answer

1. **Plinian eruptions** are the most explosive and send high ash columns into the air.
2. They come from high-viscosity, gas-rich magma that traps gases.
3. Trapped gas raises pressure until a violent blast happens.
4. Hawaiian and Icelandic are gentle; Strombolian is moderate in explosiveness.

FINAL_ANSWER: c

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