Western. Like Midland, Western is another accent that people consider neutral. So, you might not actually be from the Western half of the country, but you definitely sound like it.
And if you're not from the West, you are probably one of the following:
(a) A Pittsburgher - the quiz can't tell the difference;
(b) Someone from Canada (probably southern Ontario) who doesn't have a Canadian accent;
(c) Someone from northern New England who doesn't have a New England accent; or
(d) Someone from Texas or the Heartland who was born after 1980.
You are definitely not from New York, New Jersey, Chicago, Detroit, the Deep South, etc.
That would be "(c) Someone from northern New England who doesn't have a New England accent" I suppose, though I'm from smack in the middle of New England.