#4.
the artist successfully put horses in the water and it looks surreal. also, i think out of the 4, only #3 and #4 is not off topic. #3 is trying to manipulate a carrot into a human but out of the 2, i like 4 more.
that doesnt mean #1 and #2 are not good, by all means!!! it's just that i think #4 stands out more in my opinion and i do not quite get what #1 and #2 are manipulating...