If this were a question on my test, I'd probably go for tolerant or sentimental. I'd probably go for sentimental, because if the sentence had a more tolerant tone, it would say something like "My car isn't the greatest, but I can live with it".
Answer:
tomb
Explanatio
Definition of word
A small room or monument carved into rock
Option C, the attitude of the author
an author's word choice, BEST defines tone!
Sunny~ ☺