And which silhouette belongs to our hippo?
Great, you answered "D".
See here what other people have answered:
- D
- A
- C
- B
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Interesting fact:
Lighting changes our perception and can help to reveal hidden images on surfaces we otherwise wouldn’t see. When the light changes color - particularly if we use blue, red, or green light – it can activate different cells in our eyes and completely change the information in front of us.