Respuesta :
Of all excavation hazards, a cave-in poses the greatest risk of all. This could be fatal to a worker. The correct answer is A, a cave-in.
Of all excavation hazards, A. a cave-in possesses the greatest risk.
When there is a cave-in, the walls of a cave crumble and may close the exit of the cave, thus preventing workers from leaving it safely. Rocks may also fall from the ceiling and injure, if not kill somebody.
When there is a cave-in, the walls of a cave crumble and may close the exit of the cave, thus preventing workers from leaving it safely. Rocks may also fall from the ceiling and injure, if not kill somebody.