Final answer:
Harry Potter did not become the Head of the Misuse of Muggle Artifacts Office at the Ministry of Magic; this is false. He became an Auror and eventually the Head of the Auror Office. Arthur Weasley held the position at the Misuse of Muggle Artifacts Office.
Step-by-step explanation:
The statement that Harry Potter went on to be the Head of the Misuse of Muggle Artifacts Office at the Ministry of Magic is false. According to the epilogue of "Harry Potter and the Deathly Hallows," and additional information provided by J.K. Rowling after the book's publication, Harry went on to become an Auror and eventually rose to the position of Head of the Auror Office at the Ministry of Magic. The position of the Head of the Misuse of Muggle Artifacts Office was actually held by Arthur Weasley, Harry's father-in-law, during the series.