You are presented with the question "Where do rainbows rarely appear?" and the following answer choices: 
- the Great Barrier Reef
 - Nurseries of the ocean.
 - over the mountains
 - over the valleys
 - summer end
 - over the plains
 - swamp vegetation
 - over the deserts

Now knowing that sunlight and rain can cause a rainbow and all deserts have very little rain, choose the best answer.


 

        over the deserts 