I think metaphor because it is not something literal but it has meaning behind it.
Explanation:
Prose looks like large blocks of words. Poetry is typically reserved for expressing something special in artistic way
Answer:
Let's study tomorrow, Shall we?
Write an email, Will you?
Everybody clapped, Didn't they?
A little cream is added to the dishes, isn't it?
I am thinner than you, aren't I?
Explanation:
Im pretty sure its independent