Based on the context of your experiment with potato cubes placed in varying concentrations of sugar solutions, the relevant conclusion can be derived from the relationship between solute concentration (sugar) and water movement due to osmosis.
The valid conclusion about this experiment is:
The lower the concentration of sugar, the more likely the potato will gain mass.
This conclusion is based on the principles of osmosis, where water moves from an area of lower solute concentration (higher water concentration) to an area of higher solute concentration (lower water concentration) in an attempt to reach equilibrium. In lower concentrations of sugar solution, there is a higher water potential outside the potato, leading to water entering the potato and resulting in an increase in mass.
The other statements do not accurately reflect the principles of osmosis as observed in the experiment.