I was wrong in choosing D. According toGMATNinja , the explanation in the thread makes more sense from the perspective of meaning and logic!
Superficially, we’re OK here: “had slowly evolved” is accompanied by the simple past action “did not spring to life.” But wait: the timeline is nonsense. This is literally saying that Edison’s inventions first “had evolved slowly” and THEN they “did not spring to life.” Huh? It makes much more sense to just use the simple past for both actions
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Superficially, we’re OK here: “had slowly evolved” is accompanied by the simple past action “did not spring to life.” But wait: the timeline is nonsense. This is literally saying that Edison’s inventions first “had evolved slowly” and THEN they “did not spring to life.” Huh? It makes much more sense to just use the simple past for both actions
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