I almost thought this was a good decision photo...until I realised there is no decision to be made since both socks are the same! If there was 1 blue and 1 red sock it would definately meet challege, and I suspect do quite well too.
I don't feel that the image conveys instantly recognizable decision. I think it has to do with the color of the socks being both red. One is different for sure, but I have to look a little longer.
Hehe.. cute pic! If you could have set up the shot, I might have not used as much flash or used sunlight so as not to create the harsh shadows, but this is an excellent job of capturing a very cute moment that meets the challenge! Great clarity! Adorable baby!