u/GoastCrab

My wife (EL coordinator with an English background) sent me this standardized test math problem she’s working through with one of her students. The answer key says D but I can’t figure out why since it seems like a vertical slice. A math teacher at the school said something about D not producing a square pyramid anymore once it’s been sliced like that but the question doesn’t say the resulting polygon needs to still be able to produce a square pyramid anymore (not to mention A doesn’t qualify anymore based on that criteria either). Anyone have an explanation that makes sense?