Answer:
Step-by-step explanation:
In a balanced chemical equation, each side of the equation has the same number of atoms. This is because the law of conservation of mass requires that matter is neither created nor destroyed in a chemical reaction. Therefore, the total number of atoms of each element must be the same on both sides of the equation.While the coefficients are used to balance the chemical equation and ensure that the number of atoms of each element is the same on both sides of the equation, it is the atoms that are being balanced, not the coefficients themselves.Therefore, the correct answer is (d) atoms.