Answer:
Oxymoron
Explanation:
The term<em> </em><em>figurative language</em> 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 <em>oxymoron</em>. It involves a combination of contradictory or incongruous words. In this case, we have the combination of words <em>dark </em>and <em>suns</em>. As we know, the sun can only be bright, but in this case, it's described by a completely opposite word - <em>dark</em>.