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The first problemthat occured was that ponyboy had just finished getting out of the theater when the socs beat him up and dally thought it was also the same peopel that beat johnny up too
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
The answer is “after we are finished” because it is the only phrase that can stand by itself