Answer: The answer is polar covalent bonding
Explanation:
Water molecules (H2O) has 2 hydrogen atoms bonded to a single oxygen atom. Due to the more electronegative power of oxgen, it attracts to itself the single electron in each of the hydrogen atoms - thus becoming partially negative charged, while hydrogen atoms become partially positively charged.
The presence of these opposite charges in water molecules is known as POLAR COVALENT BONDING and it holds the molecules together for stability