Salt water is a good conductor. When salt is dissolved in water, which of following explains why it becomes a good conductor?

Question

a
The salt dissolving breaks down the insulating molecules of the water
b
The salt dissolving require physical mixing to move the charges
c
The salt dissolving generates a large amount of heat which is used to carry current
d
The salt dissolving frees the electrons in the solution, allowing them to move freely

Answer 1

d
The salt dissolving frees the electrons in the solution, allowing them to move freely