A water molecule is an example of which type of molecule?

A water molecule is an example of which type of molecule?
  a. polar covalent
  b. nonpolar covalent
  c. ionic
  d. coordinate covalent
  e. network

Question 2

A hydrogen bond is
  a. a sharing of a pair of electrons between a hydrogen and an oxygen nucleus.
  b. a sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a
  nitrogen nucleus.
  c. an attractive force that involves a hydrogen atom and an oxygen or a nitrogen atom that
  are either in two different molecules or within the same molecule.
  d. found only in water molecules.
  e. is the strongest form of chemical bond.