Amazingly, the answer to this one is still not 100% clear, but clearly multiple answers were in the realms of possibility of being correct. "Voted out in four" wins it seems, though the vote was a lot closer than it should have been. There was a bit of a coup, but it was a self-coup in favor of Trump, not one to remove him. There was an impeachment, but it didn't lead to conviction, and even if the second impeachment trial ends in a conviction, it won't be what led to Trump's removal. Trump didn't die, but he did catch covid-19, and it's pretty easy to imagine that a more severe case could have led down that path. We didn't have World War III, but Trump did literally launch planes to bomb Iran then ordered them to turn around after they were already in the air, so that wasn't out of the realm of possibility as well (along with some sort of insane love/hate North Korea non-strategy). The possibility of the 25th Amendment was at least seriously floated by Pelosi & Schumer, although Pence shot it down apparently after defanging his authority and getting some assurance of vaguely good boy behavior. Trump managed to destroy quite a bit of the US government, but not all of it (we'll see how many Trumpy loyalists burrowed into the civil service in 2020 after he just unilaterally rescinded rules that were expressly intended to stop what he did... what use is a rule if the guy who's supposed to enforce it doesn't, etc.).