Quesnon $$

$\frac{?}{{?}_{?}}$ pts

As you will find, seeing "ice bath" in the description of a thermal process is sometimes an indicator of an isothermal process $($insofar as it keeps the temperature of an ideal gas constant$).$ However, this, latter conclusion isn't always the case, so you need to evaluate the entire situation. Of the following descriptions of thermal processes, which one is an isothermal one?

A gas$-$filled cylinder with a moveable piston and thin walls is at $0$ and sitting in an ice bath, and the piston is pulled out.

A gas$-$filled cylinder with a moveable piston and thin walls that is at room temperature is placed in an ice bath and the piston is pulled out while the gas and cylinder cool down to $0$ C$.$

A gas$-$filled cylinder with a moveable piston and thick, insulated walls that is at room temperature is placed in an ice bath and the piston pulled out.

A gas$-$filled cylinder with a moveable piston that is at room temperature is placed under a flame and heated to $300C.$ There is an ice bath on the other side of the room.

A gas$-$filled cylinder with a moveable piston that is at $300C$ is placed in an ice bath so that all the ice and water are turned to steam.

A gas$-$filled cylinder with a moveable piston and thin walls that is at room temperature is placed in an ice bath and allowed to cool down to $0C$ while the piston is held in place.