Explanation

Shane Watson is correct because he was the player who scored the most runs and was declared Player of the Series in PSL 2019. Kamran Akmal is incorrect because he did not achieve this distinction in PSL 2019. Imam-ul-Haque is incorrect because he was not the top run scorer or Player of the Series for that tournament. Ahmed Shehzad is incorrect because he was neither the top run scorer nor the Player of the Series in PSL 2019.