500 + 602 + 790 = 1892. :)
Bateries
remote
toy car
wireless mouse
house hold
lamps
TV
fridge
It might be said this paragraph shows "the damages caused by the lateral blast" (option D) because the reader gets to know that it can "shoot (..) pieces of rocks", "kill by impact, burial or heat" and to "knock entire forests". Nothing about prevention or causes is mentioned not even how to avoid it
