Which answer matches this clue: the pre-Second World War racing driver from Mantua known as the Flying Mantuan who won 24 Grands Prix?

• A Alberto Ascari
• B Achille Varzi
• C Luigi Fagioli
• D Tazio Nuvolari ✓

Tazio Nuvolari is considered one of the greatest racing drivers of all time; Ferdinand Porsche called him the greatest driver of the past, present, and future.