Based on the options provided, if the photograph shows a small cylindrical object with intricate designs carved into its surface, then it likely represents "cylinder seals." If the photograph depicts a stone slab with inscriptions or relief carvings, it would be "stone stelae."
However, without seeing the actual photograph to make a more definitive judgment, I suggest selecting "cylinder seals" if it's a cylindrical object, or "stone stelae" if it's a flat stone with carvings. Ivory netsuke and cuneiform printing would not be appropriate choices for Sumerian art.