Answer:
Either A or B
Explanation:
You want to know what you want to talk about, but you also want to know what your audiences age is so you know...maybe B.
Here is the answer that I found for your question :)
<span>B) establish background information
The author, as she drafts the sentences, is adding information that will provide background insight into the characters and situation. The sentence went from the reader knowing nothing besides a cost to knowing what the expensive thing is, who it's for, and why it's going to be so expensive. </span>
