The correct answer is Be tried and convicted for murder in any place in Pakistan wherever he may be found.
This option is accurate due to the principle of extraterritorial jurisdiction, which allows a country to prosecute its citizens for certain crimes committed abroad. Under Pakistani law, particularly for serious offenses like murder, a Pakistani national can be tried and convicted in Pakistan regardless of where the crime was committed, provided they are apprehended within Pakistan's jurisdiction.
Option A is false because Pakistani law does provide for the conviction of its subjects for crimes committed outside its territory.
Option B is false as jurisdiction is not limited to Islamabad; the individual can be tried in any competent court in Pakistan.
Option D is false because a valid option exists.