Question

which type of volcano is formed from andesitic magma high in dissolved gases?
shield cone
cinder cone
fissures
composite cone

Explanation:

Composite cones (stratovolcanoes) form from andesitic magma, which has high viscosity and high dissolved gas content. Shield cones use low-viscosity basaltic magma with low gas content; cinder cones form from basaltic scoria; fissures are magma outlets, not volcano types.

Answer:

composite cone