#feedback I think this explanation could include an explanation of why A is not an instance of denying the sufficient condition, because I read that answer as doing that, which is why I eliminated it.

are there more drills to practice these anywhere? I'm always able to draw at least one conclusion, but never the others, and I'd like to improve.

#feedback it would be nice to have a lesson about reading between the lines. It's not intuitive, so practice and theory behind it could help

#feedback it would be nice if the paragraph wasn't broken up in the text portion of this page

there's a typo under the explanation for answer choice B where it says ths instead of this.