Thank you for the feedback! Here are some comments:
I got 10/10 on the general quiz, but the person who wrote the questions got 9/10.
The question that asks how many levels you can spend at an enchantment table: the correct answer is 3, which wasn't an option. The enchantment table can require up to 30 levels, and the anvil can spend up to 40 levels.
I rephrased the question to "what is the maximum enchantment level", which is indeed 30.
I was told I was incorrect on the crafting quiz because I answered "birch boat" to the one which showed 5 birch planks. I take it the "correct" answer was "boat" but I know you could have out in more than one correct response, based on one of the questions in the general quiz. This thread was posted in 2017 so if the quiz was written around the same time, birch boats did exist at that point in time. If, on the other hand, "oak boat" would have been acceptable, then I submit that the graphic should be fixed because it was clearly birch planks.
"Birch boat" has been added as one of the possible answers!
"Slime" is the only official name (https://minecraft.gamepedia.com/Slime).
So it told me I had 9/10 on all three quizzes. I suggest you fix them, as I have got more correct answers than you have. I got scored 5/10 on the redstone quiz and I can accept that as I do not know redstone very well, however I am a bit confused on the BUD question on the redstone quiz. It doesn't look like it'll do anything to eat the cake, because the cake is not adjacent to any blocks that are part of any redstone circuitry. I tried to replicate the device but it doesn't seem to work. I cannot see how the redstone torches are off in that configuration, they should both be on.
There is a single piece of redstone beneath the redstone block, but that wasn't clear from the picture so I added a note to that question. Eating the cake will then ignite the TNT.