Answer:
correct option is d. absolutely liable for any collapse
Explanation:
correct answer is absolutely liable for any collapse as
The mine runs from the boundary surface of the leased area to the center of the land. Therefore, if excavation is done to drop the cause, Umberto will only be liable if he acts negligently. They have got the rights to the designated area, but they must be careful not to let the excavation affect other areas and strengthen its structure.
