Step 1: Understand the context.
In the context of poetry, when describing fire, it often represents intensity, danger, or destruction. The poet describes the redness of fire as "cruel" to convey its harsh, destructive nature.
Step 2: Analyze each option.
- (A) nice: Incorrect. Fire is rarely described as "nice" in poetry, especially when emphasizing its destructive aspect.
- (B) cruel: Correct. The fire's redness is often associated with violence or destruction, making it appear cruel to the poet.
- (C) acceptable: Incorrect. Fire is not generally seen as "acceptable" in the context of destruction.
- (D) comfortable: Incorrect. Fire's redness is not described as comfortable, as it typically symbolizes danger or suffering.
Step 3: Conclusion.
The redness of the fire is described as cruel to reflect its harmful and destructive nature.