"A. You know, of course, that she used to dive for her college swim team." does not have any errors in comma usage. "Of course" is almost always surrounded by commas.
Answer:
Tyler has been there for four hours by lunchtime.
Explanation:
I have no idea what this is supposed to state but theres your correct sentence.
She is completing step 4, which is where you ask the audience questions, keeping them curious to continue readin' so they have an answer.
<em>Hope you find this helpful :-)</em>
We need to see what you’re working on that doesn’t help us help you
B: a character whose traits, beliefs, and behavior evolve throughout the story
