Which of the following would be considered a solution?

a: salt in a sugar bowl

b: sugar added to water

c: oil added to water

A solution must have both a solute and a solvent, and they must exist in solution together. the solute must be dissolved in the solvent; salt does not dissolve in a sugar bowl, nor does oil dissolve in water; it is a non polar molecule. we know that sugar (the solute) when added to water(solvent) will dissolve, creating a solution. 
therefore, B

Must be negative.substance increases