Answer:
Oxymoron
Step-by-step explanation:
The term figurative language refers to the use of words in an unusual way in order to convey a complicated meaning, make writing more interesting, add clarity, or make a comparison. Figures of speech are the key part of figurative language, and there are many of them.
One of them is called oxymoron. It involves a combination of contradictory or incongruous words. In this case, we have the combination of words dark and suns. As we know, the sun can only be bright, but in this case, it's described by a completely opposite word - dark.