"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.
B:the second one is the only one that specifies
You make good money and can support your family but your by rich and you can’t buy everything you want
Answer:
1. After school, the students are gonna go running at the park.
2. My friend is going swimming at the pool.
3. The large monster is sitting in the sun.
