Sulfuric acid (\( \text{H}_2\text{SO}_4 \)), a strong acid, fully dissociates in water to yield two protons (H\(^+\)). It exhibits greater acidity than hydrochloric acid (\( \text{HCl} \)) or nitric acid (\( \text{HNO}_3 \)), which are also strong acids but only undergo single dissociation. Hydrofluoric acid (\( \text{HF} \)), classified as a weak acid, does not dissociate completely due to hydrogen bonding.Consequently, \( \text{H}_2\text{SO}_4 \) is the most acidic in aqueous environments. Option (2) is therefore the correct selection.