Concept:A solid dielectric is an insulator that improves a capacitor’s performance, but it does not increase electrical conduction.Explanation:The dielectric material between capacitor plates reduces electrical conduction because it prevents current from flowing directly between the plates.It allows the capacitor to withstand a higher maximum potential difference.It increases the capacitance of a capacitor of given dimensions compared to vacuum.It also keeps the plates at a fixed separation.Thus, the statement that it increases electrical conduction is not an advantage.Answer:Option B.