Answer:
The correct answer is D.
Step-by-step explanation:
The specific heat, or also called specific heat capacity, is the energy needed to raise the temperature of 1 kg of mass by 1 degree Celsius. If we know that all the substances have the same mass, the facility to increase in 7 ºC will depend on the lower value of the specific heat. In this way, the element that requires less energy to increase 7 ºC is wood.
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