I think its an Idiom. I don't see like or as. So no simile. I don't see he is something like a marshmallow. - No metaphor. I also don't see a non-human thing doing human things- the grass was dancing in the wind. My answer would be an idiom.
Hope this helps!
<span>Samuel Taylor Coleridge - Fantasy and supernatural William Wordsworth - Healing power of nature William Blake - Mysticism and spirituality Thomas Gray - Aspirations and potential of all human beings</span>
Paradox is the answer because Paradox has to do with opposites being shown
