Yeah, I mean almost everything he's done is preposterous. Don't mistake my reticence to immediately condemn Trump for some sort of tacit approval of him. But I'm comforted by the fact that Trump, at least so far, has remained essentially a political phenomenon. I pretty much disagree with everything he stands for, but, at this point, he actually has more or less played by the rules. He's the President, and he's allowed to be a dumbass and make stupid, unreasonable decisions if he wants to. And that's why we'll probably elect a congress in 2018 that will make his life a living hell and cut his balls off, and then we'll vote his ass out of office in 2020.

D) This will end up being a really weird episode in the history of democratic self-governance, and probably lots of people will suffer all sorts of harms because of Trump, but our institutions will survive long after him and things will get better. This is just another example of "two steps forward and one step back," which has been the defining characteristic of democracy since its inception.
And as much as I'd like to see Trump impeached or indicted, I don't think either of those are likely. I recommend you peruse Professor Tribe's latest book
To End a Presidency: The Power of Impeachment, for a complete discussion of all that stuff. Professor Tribe is about as far from a conservative as a human being can get, but he concludes that Trump probably couldn't be impeached based upon what is publicly known at this point in time.