Final answer:
Hugh Grant is the famous person with "Mungo" as his middle name, with the full name being Hugh John Mungo Grant.
Step-by-step explanation:
The famous person who actually has the name "Mungo" as their middle name is Hugh Grant. The correct answer is d) Hugh Grant. His full name is Hugh John Mungo Grant. Hugh Grant is an English actor and film producer, known for his roles in various famous films such as 'Four Weddings and a Funeral,' 'Notting Hill,' and 'Love Actually.' The name Mungo is quite unique and not commonly found as a middle or first name, which might make this trivia question particularly interesting.