Im going to get blammed to hell.
I honestly can't say it was great though, you had obscure things that worked and obscure things that didn't work. Curiosity could both win and lose it for you, there should have been at least some hint as to what could possibly work.
Anyways there wasn't all that much wrong with the rest but that's kind of a big thing, i personally think its generous but 1 reason isn't enough to give you below 7/10.
No need to improve 1/20 multiple choice games are guessing.