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.
Personal pronouns is the same as asking for singular nouns or pronouns because they both express words that deal with just one person. Personal Pronouns has the job to replace a characters name with terms such as “he” or “she” so the name won’t be repetitive throughout the whole story or so the story may have a shorter format.
Personal Pronouns use words:
I, you, he, she, it, we, they, me, him, her, us, and them
However, there’s also 1st point of view, 2nd point of view and 3rd point of view pronouns that would be worthy of looking searching :)
She is as quiet as a mouse, so she barely speaks or makes noise.
According to the text, one of the themes developed on the novel should be The Effects of Facts over Opinions on Children's Education. It is no wonder that facts are important to learn in order to build a frame of reference to construct one's own ideas, but the issue developed in the story comes when a powerful man wishes that children learn by facts alone. This practice will surely have a dramatic effect on the story, since at one point, the characters will realise the importance of considering other's opinions to generate proper and educated ideas to share.
The idea of The Impact of Private Companies on the Common Society should be included in the story as well, as it is a businessman that demonstrates the potential grasp of a few individuals over the livelihoods of many. For better or for worse, the ideas and experiences of one person can become the perceptive world for the rest if the right amount of power is possessed, and enough money is put on the table.