I think lymph nodes produce white blood cells...so when you get sick, they produce many white blood cells to fight the bacteria or virus, and I assume they swell because they're over-producing white blood cells.
I think it’s letter A maybe
Answer:
the last one
Explanation:
Satisfy a biological need
Answer:
I don't know if a certain type of formatting is required, but I didn't really address it. I left comments in the document, so you can just click on it and see what my feedback is.
Hope I was of help!