Got 10/20. The second photo really threw me for a loop. All the texture on the skin and and hair led me to believe human; I noticed the weird patch on the shoulder and the unnatural shine on the ear but excused it as technical flaws or something, chose human in the end. I really thought that corporate logo style drawing of the avocado was human, like it wasn't even a question for me and yet the fact that it was AI really surprised me.