Which answer matches this clue: the boxer who held the world heavyweight title in the 1930s, the only native-born fighter to do so?

• A Francesco Damiani
• B Nino Benvenuti
• C Primo Carnera ✓
• D Duilio Loi

Primo Carnera was a towering figure at nearly 2 metres tall; his reign as heavyweight champion from 1933 to 1934 was clouded by allegations of fixed fights.