Different substances requires different amount of heat because every materials has its own specific heat capacity. Heat capacity is the amount of heat required to increase its temperature by 1 degree. Different substances have different types of bonds due to which they required different amount of heat energy for its breaking.
For example, heat requirement of water is different from glucose because they are made of different substances.
I think the correct answer among the choices listed above is option B. The homeostatic process that is characterized by the diffusion of water molecules is called osmosis. This is the process where solvent molecules move through a semi-permeable from high solute concentration to low solute concentration.