That's an opinion, but other than that are you trying to make a point or is this a question?
The answer would be the last one, leave it as is. B and C change the meaning of the sentence entirely, while A sounds unnatural and is too verbose.
Hope this helps! :)
Answer:
Imagery
Explanation:
One of the techniques that Irving is using in this text is that of imagery. Imagery refers to a type of language that is used by poets or other authors. It includes figurative language that uses creative ways to describe a thing, place or situation. It also employs devices such as metaphors and similes. In this case, Irving is using imagery when describing the expression the person had, the pain he felt and the horror he inspired.