The answer is
“A. The injustice of discrimination.”
The reason for this is that the dog is at old age, stinky and is about to die. And in the book Carlson believes his useless for that reason, and the dog was discriminated for it. The author expressed how society treats (or discriminate) people of old age, person with disabilities and minorities.
Well it can mean three things.
1) give the impression or sensation of being something or having a particular quality.
2) used to make a statement or description of one's thoughts, feelings, or actions less assertive or forceful.
3) be unable to do something, despite having tried.
Hope this helped! :)
The tree whispered in the wind
The water gargled like a baby
