Four metal blocks were heated to different temperatures, and stacked together, as shown below.

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Which statement below describes the movement of the thermal energy?

Heat will move from Sample 3 into the other samples until they are all the same temperature.

Sample 2 will transfer cold to Sample 3.

Heat will move from Sample 4 to Sample 2 because they are almost the same temperature.

Heat will move from Sample 3 to Sample 2 because the greatest difference exists between these two samples.

Heat will move from Sample 4 to Sample 2 because they are almost the same temperature.

The correct statement describing the movement of the thermal energy is:

Heat will move from Sample 3 to Sample 2 because the greatest difference exists between these two samples.