Answer: C. Solvent
Step-by-step explanation:
Water is a universal solvent. This is because of it's polar nature. In a solution, a solvent is the one substance which mixes within it other substances. The substance which is being mixed is the solute.
The water can dissolve salts, sugars, chemicals, biomolecules, vitamins within it.
The sugar quickly dissolved in the water indicates the solvent property of water.