Answer:
Information that line graph can show is changes over time.
Answer: C
This sentence is an example of first person, because it uses the word "we."
So, the answer to the question should be answer C. Hope this helps!
Stalin is using Ethos. In using quotes from Lenin, Stalin was building "credibility or trustworthiness." Wanting to convince an audience, the use of Ethos shows expertise and confidence. Quoting other great works or leaders may express experience and knowledge.
The answer to your question then is C, Ethos.