Plsssss HELLPPP ILL MARK BRAINLIESTTTTTT PROMISE
If the total mass of the products of a reaction is less than the mass of the reactants, what must be true?
A nuclear reaction has taken place.
A chemical reaction has taken place.
Nuclear fusion has occurred.
Nuclear fission has occurred.

Respuesta :

Answer:

Nuclear Reaction

Explanation:

Technically fusion and fission should be included, but a nuclear reaction includes both fusion and fission, so it must be the answer.