Read the following passage:
Sure, I wish things had turned out differently for me in Vietnam. But I know things could have turned out worse, too. So I just try to be thankful for what I do have and do my best to be independent. I can dress myself and even tie a tie. No more playing guitar, though. If I close my eyes, I can just about hear the music. Just strumming my heartstrings is what I'm doing, I suppose.
What is one way the author's word choice contributes to the tone of this passage?
A.
The words "worse" and "best" represent the narrator's anxiety.
B.
The personification gives readers a peaceful impression.
C.
The word "heartstrings" adds to the feeling of nostalgia.
D.
The metaphor creates a sense of grateful acceptance.