A pH of 2.3 is the most acidic solution . Option A
An acidic solution's pH value indicates how acidic it is, ranging from 0 to 14. Acidity is indicated by a pH of less than 7, with lower values indicating stronger acidity. The pH of a neutral solution, like pure water, is 7. Acidic materials, such as vinegar and lemon juice, have pH values that are less than 7, and the pH of more acidic solutions is lower.
For example, the range of stomach acid is roughly 1.5 to 3.5. In conclusion, the pH scale is useful for measuring how acidic or alkaline a solution is; lower values indicate greater acidity.