Fusion is the change of phase from: O gas to liquid O liquid to solid O liquid to gas O solid to liquid

Fusion is the change of phase from: solid to liquid.

Explanation:

Fusion is defined as change of of a substance from solid state to liquid state. Also known as melting.

Solid → liquid (Fusion)

Vaporization is defined as change of of a substance from liquid state to gaseous state.

liquid → gas (vaporization)

Freezing is defined as change of of a substance from liquid state to solid state.

liquid → solid (solidification)

Deposition is defined as change of of a substance from gaseous state to solid state. Also known as melting.

Gas→ solid (deposition)

Sublimation is defined as change of of a substance from solid state to gaseous state. Also known as melting.

Solid → gas (sublimation)

Condensation is defined as change of of a substance from gaseous state to solid state. Also known as melting.

Gas→ liquid (Condensation)