Concept:An endothermic reaction absorbs heat from its surroundings, increasing the energy of the products relative to the reactants.Explanation:In an endothermic reaction, heat is absorbed, so the enthalpy change is positive: ΔH>0.This means the total heat content of the products is greater than that of the reactants.Thus, the correct statement is: heat content of reactants is less than the heat content of the product.Answer:C. Heat content of reactants is less than the heat content of product