Let's change the facts in Palsgraff v. Long Island Railroad.The train conductors still roughly shove a man onto a train.In the process, the man drops his package containing firecrackers, and the package explodes.But, supposed that instead of standing at the opposite side of the platform, Mrs. Palsgraff is standing near the man.She is injured by the firecracker explosion, and she sues the Long Island Railroad for negligence.

First, in her negligence lawsuit, what are the four elements Mrs. Palsgraff must prove?Second, what is Mrs. Palsgraff's best argument that there is proximate cause between the train conductor's action (negligently shoving the man onto the train) and Mrs. Palsgraff's injury?