Water, and Many Other Molecules, Exhibit a Type of Bond

Water, and many other molecules, exhibit a type of bond called hydrogen bonding. Hydrogen bonding is caused by:

A) A covalent interaction between two molecules.
B) A bond between two hydrogen atoms.
C) An attractive interaction between two polar molecules.
D) A gravitational interaction between molecules with large nuclei.
E) A bond formed between a carbon and a hydrogen.