The correct statement is:
Sulfur (S) has a larger atomic size than oxygen (O), so HS⁻ is a more stable, stronger acid than OH⁻.
This is because the larger atomic size of sulfur relative to oxygen means that the H–S bond is weaker than the H–O bond. Therefore, it is easier for H₂S to donate a proton (H⁺) compared to water, making H₂S a stronger acid. Additionally, the anion HS⁻ is more stable than OH⁻, contributing to the stronger acidic character of H₂S compared to water.