Final answer:
The correct answer to the question is B. The number of atoms of each element in the reactants equals the number of atoms of each element in the products.
Step-by-step explanation:
A balanced chemical equation represents the conservation of matter in a chemical reaction by ensuring that the same number of atoms of each element is present on both sides of the equation. This reflects the law of conservation of matter, which states that matter cannot be created or destroyed. In a balanced chemical equation, the type and number of atoms are conserved from reactants to products, which upholds this fundamental principle.
A balanced chemical equation conserves the number of atoms of each element, ensuring that matter is neither created nor destroyed during a chemical reaction.