Im not sure what the question your asking but im going to go with c.
though I can't be sure without seeing the passage first, I presume its option C) "she has a right", because it has the most assertive and passionate tone as far as I can tell.
Answer: To make the language more memorable
Explanation:
In speech, we often emphasize certain words which carry an important message. This is often done by politicians and professional speakers who deliver their speech in front of a mass of people. In doing so, we are hoping that our audience remembers the speech and the ideas we are trying to convey. By emphasizing our words and phrases, our speech is more persuasive.
the bark on the tree is smooth.