Ok so to the other questions you raised, @synonyms, I went with a really hard passage here in part because I wasn’t getting any indication that the ones I did before were challenging to you or anyone else, so I thought I would dial it up a notch. But yeah this was a tough one and the questions I asked were tough too, so I will probably dial it down a bit for the next one.
On the multiple choice issues that you described and your suggestions for this thread, the issues are actually related so let me explain. First of all, I think that how you read the passages and how you answer the questions are obviously related, but there is sort of a separate skill to answering questions that is independent of how you read the passages. What I am really trying to address here is how to read the passages, and it does seem like you are doing that very well.
Without going into too much detail about the process of answering the questions, let me mention a few things. First of all there is something that I call The Principle of No Ambiguity. It means that there can be only one right answer and that the other 4 answers must be wrong for one reason or another. So when you say that you know the right answer at first but then change your mind when you look at the other answers, in theory this should not happen. That is because in order to confidently select the right answer you also have to have reason to say that the other 4 answers are wrong. It is black and white and not ambiguous.
Now, 2 things to this point. One is that you are not using official SAT questions so that may be the problem. Often these questions ARE ambiguous so the theory above does not always work. That might be the problem and that is one reason why it is important to try to use official materials. It might be that the wrong answers could in fact be right and that it is not as black and white as it should be and that this is the reason you are getting them wrong.
Assuming the questions are “perfect” questions, then the other thing I would point out is that the right answer must be supported by the passage. Wrong answers won’t always be outright contradicted by the passage, but they won’t be supported by the passage either. On that other passage that you had trouble with (about the West and films about the West) the answer that you selected was just too broad and not supported by the passage. So often the wrong answer could be true outside of the context of the passage, but if it is not supported by the passage then it will not be right.
In the Lewis Carroll passage, the inference that the professor was lying would probably be too strong for a right answer on the SAT. There just isn’t anything in the passage to support it. Now, does that mean that he wasn’t lying? No!!! Maybe he was. Maybe he deceived the filmmakers or left information out. But there really isn’t anything in the passage that would suggest that so that could not be the right answer on the SAT.
On the issue of me adding answer choices to my questions, there are a few issues related to the above. One is that I might not write “perfect” questions and obviously that would taint the exercise. Second is that I intended this to be about how to read critically and not how to answer multiple choice questions (which again is a different skill) so that is the other major hesitation. Finally, I just don’t know if I have the time But I do want people to participate in this and learn from it so maybe I will do it or at least try to do it and see what happens.