Dissolution gas, exo/endo Thermic

[Bengo]

One of the answer explanations in practice book states "student 2 says that the solubility of carbon dioxide in water decreases as the temperature increases. It would be best concluded from this statement that the process of dissolving carbon dioxide in water is exothermic."

Can someone please explain to me how they can make this conclusions based on the statement?

 

[DrClaude]

It is simply an application of Le Chatelier's principle.

 

[Bengo]

Oh duh! Don't know what I was thinking. Thank you