It's very tricky to try and say WHY somebody decided to do something.
Unless the person TOLD you, and even then, you can never be absolutely
positively sure what really motivated him to do what he did.
Any one of the choices under #4 ... or ALL of them ... could be correct
descriptions of what was going on in Smithson's mind. Well, maybe 'd'
would be a little weird, because of he wanted a building named after him,
he could just as well have had it built in England or anywhere else.
The most altruistic, upstanding, pure-hearted, generous, straight-arrow,
well-meaning, and kindly motive, and the answer that we can be sure
Smithson gave whenever anybody asked him, is definitely choice 'b'.
