Explanation

Naseem Shah is the correct answer because he holds the record for being the youngest fast bowler to take a five-wicket haul in Test cricket. Shaheen Shah Afridi is incorrect because while he is a fast bowler, he does not hold this specific record. Shahid Afridi is incorrect because he was primarily known as an all-rounder and did not achieve this milestone at the required age. Mohammad Aamir is incorrect because he has not achieved this specific record.