Multiple-choice questions do not work correctly
I was advised by to put it here:
There are multiple problems with multiple-choice questions 4.3 and 4.6 (probably other as well) in A Beginner's Guide to Linux Kernel Development (LFD103):
1. On mobile Firefox the interface behaved somewhere in between single-choice and multiple-choice: when I tap on an item it gets selected and some other items get deselected, but some remain selected. Repeat tap does not deselect an item and deselecting all but one item is not possible.
2. On desktop Firefox the interface works as for the multiple-choice question, even though the question was probably intended to be single-choice.
3. When "All of the above" item AND literally all items above it are selected the answer is considered incorrect even though it is technically correct.
Hopefully someone who can correct the wording or code behind the quiz will see this message.