Actually the shoes one was IMHO terrible. It does not mention if you can distinguish a left boot from a right boot by touching them. I'm totally sure I CAN do it during darkness, and it seemed obvious that since it is only SIGHT that I can't use, I can use all my other senses. And on top of that, shoe/boots questions are famous for playing on knowing which one is right and which one is left.
I first assumed you COULD distinguish them, in which case 3 would have been the correct answer. Seeing it wasn't, I assumed the question didn't even think of that possibility that was obvious to me so I tried the answer for the situation in which you couldn't distinguish a left boot from a right boot, and that was it.