Here's why:

* Electrolytes are substances that produce ions when dissolved in water. Ions are charged particles (atoms or molecules with a net positive or negative charge).

* Electric current is the flow of charged particles.

* When electrolytes dissolve in water, the ions they produce can move freely, allowing for the flow of electric current.

Examples of electrolytes:

* Salts: Table salt (NaCl) dissolves into sodium ions (Na+) and chloride ions (Cl-)

* Acids: Hydrochloric acid (HCl) dissolves into hydrogen ions (H+) and chloride ions (Cl-)

* Bases: Sodium hydroxide (NaOH) dissolves into sodium ions (Na+) and hydroxide ions (OH-)

Non-electrolytes are substances that do not produce ions when dissolved in water and therefore do not conduct electricity. Examples include sugar and alcohol.