Because they are monsters so the answer should be C
7 is C, illegal (not ‘irregular’)
And the second part on number 3 would be ‘to invite’ not just ‘invite’.
All the rest look right, you did a great job.
The question that is most clearly analytical in nature is C. why did the author decide to start in the middle of the action?
A and D are not so analytical, as all you have to do is count the mistakes or chapters. B is also not analytical because you can just retell what happened. But C is analytical because you have to analyze the author's motives behind his decision to start the story in the middle of the action.