Athena!!!! for the life of me i know this one as background knowledge!!
Post-and-lintel system
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Post-and-lintel system, in building construction, a system in which two upright members, the posts, hold up a third member, the lintel, laid horizontally across their top surfaces. All structural openings have evolved from this system, which is seen in pure form only in colonnades and in framed structures, because the posts of doors, windows, ceilings, and roofs normally form part of the wall.
Yes. Potentially you can die. You would most likely become very ill as the bacteria will build up and when you eat it the bacteria will give you food poisoning symptoms (vomiting, diarrhea). If it is severe it can cause dehydration. It is dehydration that would cause organ failure and potentially death.
A is the answer. a major third