Which one? Sketches for SAFE CROSSING cover art

Thanks for all your input! Number 5 was a clear favorite (with adults only: the kids in my test group preferred the emphasis on animals, #2 or #3.) Here are some variations on #5. Which one is the strongest?? Flip-flop Cover Sketches for SAFE CROSSING:

Safe_Crossing_Cover_sketches-TONES-FLAT Safe_Crossing_Cover_sketches2:tones:flat