I believe the answer is b.
Character one: Naomi from France, works as a banker
Character two: Giles from England, works as a book store owner
Character three: August from Asia, works as a cranky drug dealer
Answer:
I would say concerned
Explanation:
This is because he asks a questions.
Jubilant means happy and joyful which doesn't make sense nor does satisfied. So I would conclude that its Concerned.