The correct option is A NaCl dissociates
When NaCl is added to water, the Na+ ion of NaCl is attracted to the oxygen side of the water molecules, while the Cl− side is attracted to the hydrogens' side of the water molecule (Oxygen has slight negative charge and hydrogen has slight positive charge because water is a polar covalent molecule). This causes the sodium chloride to split in water, and the NaCl dissolves into separate Na+ and Cl− atoms.