Answer:
c.Polar covalent bond
Explanation:
Hydrogen bonds: It is that bonds which is formed between H-atom and high electronegative elements such as O, F etc.
Polar covalent bonds: It is also covalent bond .Covalent bond is formed by sharing of electrons between two atoms.But in polar covalent bond the sharing of a pair of electrons between two atoms is unequal.Because one atom spend more time with electrons than the other.
Van der Waals interaction:It is also type of force.It includes repulsion and attraction between atoms. molecules and surfaces, as well as other intermolecular forces.It is different from covalent or ionic bond.They are caused by the correlation fluctuating polarization of nearby particles.Three types of van der waal force are disperson force ,Dipole-Dipole and hydrogen bond.
In a single molecule of water , the two hydrogen atoms are bonded to a single oxygen atom by polar covalent bond.Because oxygen is slightly negative and hydrogen are slightly positive in a water molecule and oxygen more attract electron towards itself.
