From the way the tester described the knowledge test to me, it didn't sound like a test of knowledge at all but more a test of looking for the thing that didn't fit or was wrong with the picture.
Dd had some very eccentric ways of looking at what was wrong. I'll give a made up example so that I'm not potentially giving away test questions should the example the examiner gave me happen to be a real question. Dd, for example, would be looking at a picture of an upside down tree and in terms of what was wrong with the picture would answer something like 'it has maple leaves, but an aspen trunk and I don't believe that you can graft those two types of trees together.'
Our DS did EXACTLY the same thing on this section. Completely ignored the "obvious" answer and nit-picked the details. Of course . . . he's like that 24/7 so I shouldn't be surprised.
