What type of solutions can conduct electricity?

The ability of a solution to conduct electricity is closely linked to the presence of charged particles, known as ions. Aqueous solutions that contain ions can conduct electricity because these ions are free to move within the solution, allowing for the flow of electric current. When ionic compounds dissolve in water, they dissociate into their constituent ions, which carry the electric charge necessary for conductivity. This principle is fundamental in understanding how electrolytes work in various chemical processes.

In contrast, saturated solutions may or may not have enough ions in solution to effectively conduct electricity, making them less reliable for this purpose. Insulated solutions, by definition, do not allow electrical flow, as they are designed to prevent the movement of charge. Lastly, not all solutions can conduct electricity; those that lack ions, such as pure water or non-electrolyte solutions, will not be able to conduct electricity. Therefore, the presence of ions in aqueous solutions is the key factor that enables electrical conduction, highlighting why the correct answer focuses on aqueous solutions containing ions.