Answer:
Your answer would be C.
Explanation:
Because your reader wants to know the history therefore there needs to be a timeline.
What sentence? I don't see one.
Informal style is a broad term for speech or writing marked by a casual, familiar, and generally colloquial use of language. An
informal writing style is often more direct than a formal style and may rely more heavily on contractions, abbreviations, short sentences, and ellipses.