Thanks! I generally tried to pick a range of pieces that meant some are "obvious" and some are "ah! that makes sense". Based on the average so far, I'd say the balance is good :)
As a general Lego aficionado, I would like to point out that Brick Modified technically is any piece the height of a brick and at least 1x1 size that has any sort of modification such as extra studs, clips, axle holes, etc. This ought to be a " Brick, Modified 1 x 1 with Studs on 4 Sides". That being said, the other options are not Brick Modifieds (except for the slope, to some, who are wrong) so I guess it is correct. Nice quiz! 5/5 and nominated!
Yes I am aware, however this piece is quite commonly referred to as simply "brick modified" as it's one of the most common modified pieces. Similarly with the Jumper plate, as there are other jumper plates but this is the most common one.