Question

when a volcano erupts, what determines the type of eruption that occurs? a the shape of the volcano and the age of the magma b the amount of pressure and gas in the magma and the type of magma c the type of rock surrounding the volcano and the location of the magma chamber

Explanation:

To determine the type of volcanic eruption, key factors are the magma's properties (like viscosity, gas content) and pressure. Option A's "age of magma" and "shape of volcano" are not primary determinants. Option C's "rock surrounding" and "magma chamber location" are less critical than magma's own characteristics (pressure, gas, type) as in Option B.

Answer:

B. the amount of pressure and gas in the magma and the type of magma