I think the topic sentence is sentence 10.
The correct answer is pseudo=listening. Monica pretends to listen what Garth is saying but she is not paying attention, instead on interacting with Garth she is only sayin "uh huh". In this case Monica is focused on her cell phone which avoids to have an effective communication between her and Garth.
The answer is C! last week you recommended ... ETC
Answer:
let us not wallow in the valley of despair.
