Here is the full excerpt for this question:
For me, reading has always been a path toward liberation and fulfilment. To learn to read is to start down the road of liberation, a road which should be accessible to everyone. No one has the right to keep you from reading, and yet that is what is happening in many areas in this country today. There are those who think they know best what we should read. These censors are at work in all areas of our daily lives.
I believe the answer is: D. emotions
Rhetoric that appeal to emotions could be seen from the use of sentences that is aimed to make the readers/listeners relate to a certain situation that might ignite their emotional response. From the excerpt above, this could be seen in this line: No one has the right to keep you from reading, and yet that is what is happening in many areas in this country today.