Answer: C) Punishment.
Step-by-step explanation: The connotation of a word is the meaning given by the context or even by the readers, based on their emotions or personal experiences (it is the antonym of denotation, which is the literal meaning of a word). The denotation of "woe" is things that cause sorrow or distress, but in the given sentence, we can see that the word "woe" has the connotation of "punishment" (it is saying that the war is a way to punish) so the correct answer is option C.