Which statement describes a system that consists of sugar crystals dissolving in water?

the system becomes more ordered and has an increase in entropy.
the system becomes more ordered and has a decrease in entropy.
the system becomes more disordered and has an increase in entropy.
the system becomes more disordered and has a decrease in entropy.

the third option of the list: the system becomes more diosordered and has an increase in entropy.

Explanation:

Entropy is a measure of the disorder of a system. The greater the disorder of the system, the greater is the entropy.

 A solute disolving in a solvent is a classical example of increase of disorder.

Both molecutes of solvent and molecules of solute are is a state of more order when they are separate than when the solute is dissolved in the solvent. Because in the solution the molecules of solvent are randomly moving through the molecules of solvent, producing collisions.

This is the case of the solute sugar dissolved in the solvent water. The system becomes more disordered and, as said, this results in an increase of the entropy. 

High-energy and unstable.