The material that absorbs the heat of the system is; water
The specific heat capacity of a substance is defined as the amount of heat that is required to raise the temperature of 1 Kg mass of body by a temperature of 1 K. Thus, the higher the specific heat capacity, the more the amount of heat that the body can absorb without a change in temperature.
In conclusion, the material that will absorb the heat of the system is water due to the fact that water has a higher specific heat capacity than all the other materials present.
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