Which answer matches this clue: the German-occupied puppet state headed by Mussolini from 1943 to 1945 on Lake Garda?

• A Free Territory of Trieste
• B Italian Social Republic ✓
• C Kingdom of the South
• D Republic of Ossola

The Italian Social Republic, also called the Republic of Salò, was a fascist rump state under Nazi protection after Mussolini was rescued from imprisonment.