In a reaction when you check the stoichiometry and do the calculations, you might face limiting and excess reactants, the names are very self-explaining, the limiting reactant will be the actual quantity of reactant that will be undergoing a reaction, and it will also end up determining the number of products in the full reaction. The excess reactant will undergo the reaction but since there is too much, there will be some leftover. Therefore the answer is True, the limiting reactant will determine the quantity of products