The correct option is A molecules and ions
An electrolyte is any salt or ionizable molecule which when dissolved in solution will give that solution the ability to conduct electricity. This is because when a salt dissolves, its dissociated ions can move freely in solution, allowing a charge to flow.
Non-electrolytes are compounds that do not ionize at all in solution. As a result, solutions containing non-electrolytes will not conduct electricity. Typically, non-electrolytes are primarily held together by covalent rather than ionic bonds.