Question

mount st. Helens is a volcano that erupted with great force in1980. which phrase best describes this eruption​

Answer 1

D-high-viscosity magma

Step-by-step explanation:

High viscosity magma is very thick and pasty. It usually has a large amount of dissolved gas . It usually erupts violently which is what happened to Mount St. Helen's in 1980.

Answer 2

A gas charged, violent eruption, which reached 30,000 feet.