The correct option is E Concentration
Colligative properties are properties of solutions that depend on the ratio of the number of solute particles to the number of solvent molecules in a solution, and not on the type of chemical species present
Hence (E) Concentration is not the colligative property.
As all these are colligative property
A : Freezing point depression
B: Osmotic pressure
C: Boiling point elevation
D: Vapor pressure lowering