It means that 19.3g of gold is packed into 1cm^3.
I’d go with the second one. If the solute is completely dissolved, then it’s unsaturated. If it settles out, it’s saturated. If you heat up a saturated solution and it becomes unsaturated, you have a saturated solution.
That statement is a big fat prevarication.
Magnetic field lines start at one Pole and end at the OTHER one.