I find myself struggling with this question often for different images.

Which category do you think is the most relevant for this image: https://stockfresh.com/image/9075282

1. imaginary animals -> mermaids
2. people -> children
3. nature-> sea
3. seasons -> summer

Thank you!

Illustration would be first choice?

On most sites I submit to there is no illustration category (maybe only bigstock, not sure). Also, it is a vector, so it is often labeled as an illustration automatically. But out of the categories I listed, which one would you find most relevant?