Answer
The marble will stay where it is released.
Work Step by Step
We know that the marble will stay where it is released as the surface of the water is perpendicular to the local effective gravity of the rotating turntable; the water does not flow inward or outward when it is filled at this angle. Similarly, if the water is frozen and the marble is placed on its surface, the marble will stay just as the liquid water did before it was frozen.
