Textual evidence are the details you get from your reading that supports your claim. They always start with a quotation mark.
D. To highlight that a physical activity requires a body to use energy
The word expenditure in the excerpt is simply stating that the body uses energy during physical activity. It doesn't describe how much energy since that can be different depending on the level of physical activity. Because it doesn't include how much, options B and C are both wrong. Also, expenditure is not a type of activity, so this also eliminates A.
I think because they had to leave their home and even though they might be somewhere better it just doesn't feel right to them like its just not where belong or should be.
Because he always wrote poems. And I do not know Sorry!