Answer: It is important to write down your ideas so you don't forget them, and also so that you can re-read them again later, to make sure you aren't missing anything. It's also a nice thing to have to base your paragraphs off of, one idea/discovery for each paragraph. It helps space it out and also organizes.
Your answer is B, it just makes the most sense
idk what the sentence above is, but it's probably C) Several cities with large populations have many asthma-related health problems.
Personal narrative is the answer I believe
The exposition serves as an introduction to a play.