How can an unbalanced force affect an object? O Unbalanced forces keep an object at rest.
Unbalanced forces cause objects to accelerate.
O Unbalanced forces cannot affect on object.

Unbalanced forces cause objects to accelerate. This is respecting Newton’s 1st law of motion.

The answer to this question is a

Vander waals forces are inter molecular bonds that exist within molecules of the same substance. a water molecule is made up of oxygen and hydrogen atoms which share electrons between each other. the vander waals forces are forces that exist between multitude of different  molecules of water. dipole dipole forces is the type of vander waals force that exist in water. the oxygen atom which is more electronegative pulls the shared electron closer to itself thus generating a partial negative charge while the hydrogen acquire a partial positive charge. these two different charges causes attraction to occur in water molecules.