Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change

If to evaporate water, there will be a sugar.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

Precipitate, and gas