Sagot :
Answer:
1. the text must be focus on your objective/s
2.the writer's goal is to persuade the readers.
3.Writer's can use evidence of reference,but you should credit to the right owner of your reference you got.
4. Writer's can choose if it is formal or informal, but it seems that the writer is finding evidences and references so I doubt that it is formal writing.
Explanation:
I hope it helps you a lot! :)