Answer: Option (B) is the correct answer.

Explanation:

A covalent compound is defined as the compound in which there will be sharing of electrons between the combining atoms.

An ionic compound is defined as the compound in which there will be transfer of electrons from one atom to another.

A non-polar covalent compound is defined as the compound in which there will be equal sharing of electrons between the combining atoms.

A polar covalent bond is defined as the bond in which there will be unequal sharing of electrons between the combining atoms.

For example, in a NO molecule the oxygen atom is more electronegative than nitrogen atom. Hence, partial charges will tend to develop on both nitrogen and oxygen.

Also, there will be unequal sharing of electrons.

Thus, we can conclude that NO molecule is a polar covalent compound.