Answer: Option (d) is the correct answer.
Step-by-step explanation:
A covalent bond is formed by sharing of electrons between two chemically combining atoms.
A covalent bond always forms between non-metals. And, for conduction of electricity we need ions or free flow of electrons.
But in a covalent bonds there is no availability of free electrons as electrons are being shared in a covalent bond. Also, they are unable to dissociate into ions.
As a result, covalent compounds are not able to conduct electricity in any form.
Thus, we can conclude that out of the given options it does not conduct electricity in any form is a typical property of a substance that is composed of atoms that are held together by covalent bonds.