Which one among the following equations is correctly balanced?

The reaction between aluminium (Al), sodium hydroxide (NaOH), and water (H2O) produces sodium aluminate (NaAlO2) and hydrogen gas (H2). To balance this chemical equation, one must ensure the number of atoms for each element is equal on both sides of the reaction. According to the stoichiometry of the balanced equation, 2 moles of aluminium react with 2 moles of sodium hydroxide and 2 moles of water to yield 2 moles of sodium aluminate and 3 moles of hydrogen gas. Specifically, the reactant side contains 2 Na, 2 Al, 6 O (2 from NaOH, 2 from H2O, and 2 from the aluminate structure in some interpretations, though the standard balanced form uses 2 H2O), and 6 H atoms. This matches the product side: 2 Na, 2 Al, 4 O (in 2 NaAlO2), and 6 H (in 3 H2). Thus, option 2 is the correctly balanced representation.