Answer:
Metaphor
Explanation:
It is NOT a personification because nothing there has human characteristics.
It is NOT a simile because there is no like or as words.
It is NOT an alliteration because there is no repetition of consonant sounds.
Therefore it's a metaphor.
No, you always need to provide a citation.
As long as isn't really used for exceptions.
Well, maybe in things like "You can have ice cream <em>as long as </em>you eat your veggies." Then it's a little like saying "You can have ice cream <em>if </em>you eat your veggies"
But
"You can have ice cream, <em>but </em>you need to eat your veggies first."
Except
"Everyone can have ice cream, except for Gally"
Barring
I'm not really sure about this one...
Um, I hope this helps!