What is occurring with the energy of a substance during the temperature plateau observed when it freezes?

Energy is being added to the substance to keep its temperature from dropping.

No energy is being transferred, which is why the temperature is stable.

Energy is being released from the substance as it changes from a liquid to a solid.

The substance is rapidly absorbing energy from its surroundings.

In the context of an infant incubator using a Phase Change Material (PCM), what is the primary function of the temperature plateau?

To quickly cool the material down to its solid state.

To absorb excess heat from the baby.

To provide a stable and consistent source of warmth over an extended period.

To signal when the incubator needs to be recharged with heat.

PCM-A freezes at a higher temperature than PCM-B.

PCM-B can keep the incubator at a stable temperature for a longer time.

PCM-A is a better insulator than PCM-B.

PCM-B releases its energy more quickly than PCM-A.

A steeply sloping downward line.

A flat, horizontal line segment.

A gradually curving upward line.

A sharp, vertical drop to zero.

The temperature begins to increase as the substance melts.

The temperature remains constant indefinitely.

The temperature begins to drop again as the now-solid substance continues to cool.

The temperature fluctuates randomly.