What does it mean for a liquid to be at its saturation point? The liquid has absorbed as much heat as it can until it starts to vaporize.
The rate of evaporation and the rate of condensation are the same.
The liquid has completely filled up its container, and no more can liquid can fit in.
The volume of liquid is equal to the volume of vapor in a closed container.

The rate of evaporation and the rate of condensation are the same.

Explanation:

I checked it myself on PennFoster

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the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.