A solution with a pH of 3 is considered acidic.
pH is a scale used to measure how acidic or basic a solution is, with values ranging from 0 to 14. A pH of 7 is neutral, indicating a balance between acidity and alkalinity. Values less than 7 represent acidic solutions, while values greater than 7 indicate basic (or alkaline) solutions. Since a pH of 3 falls significantly below 7, it indicates a high concentration of hydrogen ions, which is characteristic of acidic solutions. Thus, the correct answer is that a solution with a pH of 3 is acidic.