Final answer:
The resistance of wet skin is lower than that of dry skin due to salts in the moisture forming ions which conduct electricity well. Bodily fluids have low resistance because of the ionic solutions they contain, making the interior of the body much less resistant to electric current.
Step-by-step explanation:
The resistance of wet skin is much smaller than that of dry skin primarily because when skin is wet, salts dissolved in the moisture go into ion form, which significantly lowers resistance.
Furthermore, blood and other bodily fluids naturally have lower resistances due to the presence of various ionic solutions, which are efficient conductors.
Adding to this, the interior of the body has much lower resistance compared to dry skin. When skin resistance is bypassed, even very small currents can produce significant effects.