Final answer:
The Kaneshige Toyo tile is a Bizen-yaki stoneware with an ash glaze.
Step-by-step explanation:
The Kaneshige Toyo tile can be described as Bizen-yaki stoneware with ash glaze. Bizen-yaki refers to a traditional style of pottery from Bizen, Japan. It is known for its natural, earthy tones and distinctive firing process. The ash glaze creates unique patterns and effects on the surface of the tile. Therefore, the correct answer to the question is 1) Bizen-yaki stoneware with ash glaze.