By comparing them is the answer
Keller states her main idea in the first paragraph and then uses a chronological recollection to support the main idea.
Answer:
I'd say football.
Hope this helps ^-^* Sorry if I'm wrong.
Explanation:
Hello there! I personally believe the answer will be:
the contents of a new textbook
The other ones seemed rather informal. Weekend plans with friends have no formality at all. As do the places to shop online for new shoes. The last one could be a candidate but it seems like something you would talk about with a friend or family member. Not so much your boss!
Hope this helped!