Concept:The high boiling point of water depends on the strong intermolecular forces between its molecules.
Explanation:Water molecules are held together by hydrogen bonds.
These bonds are intermolecular forces, not intramolecular bonds.
To boil water, enough heat energy must be supplied to overcome these hydrogen bonds.
This requires a large amount of energy, which leads to the unusually high boiling point of water.
Metallic, covalent, and ionic bonds do not directly explain this property in water.
Answer:D. Hydrogen bond