A volcanic eruption is most likely to be violet when?

A volcanic eruption is most likely to be violet when?
  • A.
    volcano is near the sea
  • B.
    neck of the volcano is sealed by a plug
  • C.
    lava is viscous
  • D.
    lava reaches the surface through a fissure
  • E.
    volcano is below an ocean
Correct Answer: Option C
Explanation
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