The correct answer is: A) Terracotta.
Terracotta is a type of unglazed pottery that is made from clay that is fired at a low temperature. It is known for its earthy color and its porous surface. Terracotta is often used for making pots, vases, and other decorative items.
Blue pottery is a type of pottery that is decorated with blue glaze. It is often made in China and Japan. Blue pottery is known for its beautiful designs and its vibrant colors.
Khurja pottery is a type of pottery that is made in the Khurja district of India. It is known for its intricate designs and its bright colors.
Studio pottery is a type of pottery that is made by individual artists. It is often made in small batches and is known for its unique designs and its high quality.
Terracotta is the correct answer because it is the only type of pottery that is unglazed and earthy. The other options are all types of pottery that are glazed or have other characteristics that make them different from terracotta.