Step-by-step explanation:
It is known that more is the temperature provided to a solution more will be the kinetic energy of its molecules. Hence, there occurs more number of collisions between molecules of solute and solvent.
Therefore, when carbon dioxide is dissolved in water then at high temperature more collisions take place between molecules of carbon dioxide and water. Thus, more readily carbon dioxide will dissolve in water.
Whereas when temperature is low then there will be less number of collisions between carbon dioxide and water molecules. Hence, less will be the dissolution of carbon dioxide into water.
Therefore, we can conclude that sample 3 most likely had the lowest solubility because it has the lowest temperature.