Pure water is a _______conductor of electricity.

Conductors and insulators are two terms used to describe different types of materials that can or cannot carry electricity. There must be free electrons in the substance for conduction to occur. We will examine these requirements closely and determine whether or not water complies with them.

Let's begin by discussing the idea of conductors. They are the substances that let electricity pass through them. They permit easy movement of electrons inside them, which is the cause of their electrical conductance. Additionally, heat may pass through them.
 There are no free electrons available for electrical conduction in pure water because the electrons are involved in chemical bonds.
Additionally, distilled or pure water is devoid of any salts. Or, to put it another way, when an electrolyte is present in water, the ions in solution enable the flow of an electric current, making water a conductor.

Salts or electrolytes must be added to water in order to increase its conductivity. As an example, add sodium chloride to clean water. This will improve water conductivity. The conductance is made possible by the formation of electrically charged ions when the salts or contaminants are introduced to pure water. Tap water and other dirty water carry electricity but clean water does not because of the presence of ions.
It is obvious from the explanation above that clean water is a poor conductor of electricity.

Hence, option B is correct.