C) hesitantly
The word “hesitantly” creates the tone that Mother Ceres is not fully agreed to Proserpina. The answer choices B and D don’t convey a tone. C shows the feeling of Mother Ceres. Her tone is unsure.
The correct option is THE DIRT HAS A CURVED SHAPE.
From the passage given above, the author used moons in his statement in order to describe the shape of the dirt under Alfonso nails. A full moon is round in shape but as the days pass by it becomes curve in shape.