Which physicist and chemist discovered several elements including sodium and potassium and invented the miner's safety lamp?

• A Michael Faraday
• B John Dalton
• C Humphry Davy ✓
• D Henry Cavendish

Sir Humphry Davy isolated sodium, potassium, calcium, and other elements by electrolysis and designed the Davy lamp to prevent firedamp explosions in coal mines.