How could you prove or disprove that a specific solute, such as sucrose, was able to diffuse through a semipermeable membrane?

In plants the sucrose is a sugar in the plants that is produce by the plants and is use as their food. So this solute is absorb by the lipid membrane by a semi permable member is the cell which are not only permable but non-polar molecules also will diffuse in that membrane

Yes she is correct. the answer is completely correct