Rotated positions of a single solid are shown. What is the symbol on the face opposite to that containing the cross?

Correct Option: Line

To find the face opposite to the cross, we analyze the adjacent faces of the cross across the different views of the solid. In the given rotated positions, we observe that the face with the Cross is adjacent to the face with a Single dot, the face with Four dots, the face with Two dots, and the face with Three dots. Since a face on a cube or similar solid can have at most four adjacent faces, the only remaining face that is not adjacent to the Cross is the Line. Therefore, the face opposite to the Cross must be the Line. This is a highly consistent logical deduction which leaves no room for ambiguity. Thus, the symbol on the face opposite to the cross is the Line. Therefore, Option C is the correct answer.