One thing that's worked quite well for me has been mindfulness meditation before taking a practice test. It sounds like you're pretty stressed out... that cumulative stress can cloud your thinking as you go through the test.
... are not reading for the content. Sometimes difficult/uninteresting subject matter ... odd question that requires more content synthesis, but at the base ...
@sunnyp89 - the answers above nail it: more "kinds of lamps" does not explain "more lamps"
And please remove the verbatim question.
Maybe @"Dillon A. Wright" can help with editing out the copyrighted content. The question is PT36, S1, Q23
Yeah, I remember that one! As funny as these are, I think they're actually good practice for those "familiar content" questions. The content is kind of nonsense and we're forced to see past what we know.