Concept:Fats are non-polar, hydrophobic molecules, so they dissolve in non-polar organic solvents according to the principle of "like dissolves like".
Explanation:Fats have long hydrocarbon chains with no charge, making them non-polar substances.
Water is a polar solvent, so it cannot dissolve non-polar fats.
Hydrochloric acid is a polar acid, and calcium hydrochloride is an ionic compound, so both also fail to dissolve fat.
Kerosene is a non-polar organic liquid composed mainly of hydrocarbons.
Because kerosene is non-polar, its molecules interact well with non-polar fat molecules.
This interaction allows kerosene to dissolve fat easily.
Thus, among the given options, only kerosene works as a fat solvent.
Answer:C. kerosene