Correct answer: the metal piece only
When we touch a metal piece and a wooden piece, the metal feels colder because metals have high thermal conductivity compared to wood. This means the metal quickly transfers heat away from our fingers, creating a sensation of cold. - The metal piece conducts heat away from your fingers efficiently, so it feels colder. - The wooden piece has low thermal conductivity, so it does not transfer heat away from your fingers as quickly, and feels warmer. Hence, the correct answer is the metal piece only.