Concept:The total internal energy of a liquid is the sum of the random kinetic and intermolecular potential energies of its molecules. It depends on the liquid’s current state and amount, not on its melting point.
Explanation:The internal energy of a liquid increases with temperature because the random molecular motion becomes more energetic.
It also depends on the mass of the liquid because more molecules store more total energy.
Specific heat capacity determines how much energy is needed to raise the temperature of the liquid, so it also affects the internal energy change.
The melting point is a fixed characteristic temperature at which a solid melts; it does not determine the current total internal energy of the liquid.
Therefore, the total internal energy depends on temperature, mass, and specific heat capacity, but not on melting point.
Answer:D. melting point