Answer:
by reducing the surface tension of the water
Step-by-step explanation:
The physical force generated by the atoms present in the liquid molecules as a result of the pull exerted on each other and the surrouding atoms compare to the water-air interphase is called the surface tension. This attraction is due to presence of hydrogen bonding between the water molecules.
Therefore the hydrogen bonding is the force at the thin-surface of water surfaces that sustain the water skater and a thin razor when placed.
When sugar is added to water ,the solute concentration of the water increases. The hydration energy is generated from the chemical reactions between sugar and water molecules. The hydration energy lowers the H-bonding(reduces the surface tension). Hence sugar lowers the surface tension