Umm.. Any site ending in .Gov or .Edu
Encyclopedia
Books written in depth on the subject
Any written or spoken words from creditable people who study\mastered the subject
Hope this helps.
When I read a story with a dialogue, I start to get an understanding on what the plot of the story may be. Foreshadowing is also something that happens in dialogues that you must pay attention to, it gives you clues.
Also, sometimes if a paragraph is long, the reader can get thrown-away from the story or get bored. So a dialogue may interest the reader again.
I hope this helps!
Answer: methionylthreonylthreonylglutaminylarginyl...
Explanation: it goes on and on and on
It would be C. Informal because you are suppose to start business letters with Dear (Yourname) and it's the only one that does.