Which answer matches this clue: the phenomenon in Tuscan dialects where voiceless stops are lenited, making la casa sound like la hasa?

• A Raddoppiamento
• B Gorgia toscana ✓
• C Metafonesi
• D Betacismo

The gorgia toscana is the aspiration or lenition of /k/, /t/, and /p/ between vowels; it is the most distinctive phonetic feature of Tuscan speech.