Step-by-step explanation: personally I think this is the answer but I’m not sure. I thought this was correct because George later on in the text is in awe of how the invention made him look at the horses in the photos in a completely different way then he sees them when they’re outside his window. Since he is in awe I think that full of wonders is connected with that fact but again this is just my opinion. Hope you do well :)
The rest simply don't make sense -from his window, in his own bed, across the grass and in Chicago Illinois, so that would conclude me to believe that it is indeed the second choice, "Full of wonders".
