Answer: The correct answer is option (b).
Step-by-step explanation:
Law of Conservation of Mass states that ' in a chemical reaction mass can neither be created nor be destroyed' .
In balanced chemical reaction the total mass of the reactants is equal to the total mass of the products formed.
According to the law of conservation of the mass the correct answer from the given options is option (b). that ".the mass of the reactants equals the mass of the products."
Hence, the option (b) is correct.