Tom was in charge of the demolition of a large high-rise building. The blasting was to take place the next day and in preparation for the blast, Tom had moved all of the explosives to the site. The explosives were stored under lock and key in a trailer used by the demolition crew. That night there was a horrible storm and a bolt of lightening struck the trailer, setting off the explosives. The trailer was blown up and shards of the trailer were sent flying for miles. One of the shards struck a pedestrian five blocks from the blast causing some serious lacerations. The pedestrian sued the demolition company for negligence. The best defense of the demolition company is: . Multiple choice question. strict liability assumption of the risk contributory negligence