The answer is A. your last name and page number
In the letter particularly, last name usually put as an introduction before the initial content of the letter, so it will be better if created with header.
For page that contains page number, the header is created to give a pointer on what the page number means/indicates
Answer:
Their purpose to help us answer the following questions, as well as helping us interpret and understand literary works:
1. What do we read?
2. Why do we read?
3.How do we read?
They were better off. Without the discovery of the uses of fire, mankind would not be here. Fire led to the rapid increase of newer, more advanced tech, such as a sword instead of a club.