If you are telling us to revise the sentence, one error is that there is a double negative. 'not' and 'un' would cancel each other, and the revised sentence 'I wouldn't say he's the nicest guy around, but I've seen him behave kindly before.'
Answer:
A: It shows the narrator’s distress about being caught between two worlds.
Explanation:
“it’s justified because it helps people that would otherwise work in very hot and unforgiving environments have a cold place to more efficient at”
