Which answer matches this clue: the chess champion who held the world title from 1975 to 1985?

• A Anatoly Karpov ✓
• B Yelena Isinbayeva
• C Evgeni Plushenko
• D Alexander Bolshunov

Anatoly Karpov is the match: the chess champion who held the world title from 1975 to 1985.