Answer: The observation supports the inside-out model..
Step-by-step explanation:
The observation supports the model because it shows that the activity of volcano may be related to water vapor found in the atmosphere of both planets.
The inside out model explains that in order for us to understand the surface of the Earth we have to first understand the interior of our planet, or inside of the Earth.
This is because everything that is on the seen on the outside of a planet has been formed by the enormous heat and forces that exist on the inside of the planet.