Explanation

M. Hafeez is the correct answer because he was reportedly served a show cause notice by the PCB for his comments regarding ICC processes. M. Amir is incorrect as there is no widely reported instance of him receiving such a notice for this specific reason. Bilal Asif is incorrect as there is no public record linking him to this particular disciplinary action. Saeed Ajmal is incorrect because he has not been cited in relation to this specific show cause notice.