Answer :
Final answer:
The word 'impertinent' reveals a negative attitude toward the mud of the WWI trenches.
Explanation:
The word 'impertinent' reveals that the speaker has a negative attitude toward the mud of the WWI trenches. By describing the mud as 'impertinent,' the speaker implies that the mud is disrespectful or insolent. This suggests that the speaker feels deeply frustrated or irritated by the presence of the mud in the trenches.
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