Which of these did your answer include?

Each hydrogen atom is bonded to the oxygen atom with a single bond.

The oxygen atom has two lone pairs.

The molecule is bent.

Oxygen is more electronegative than hydrogen.

Each O-H bond is polar.

The molecule is asymmetrical.

The asymmetry and the polar bonds produce an overall molecular dipole.

The oxygen atom has a partial negative charge, and the hydrogen atoms have a partial positive charge.