It would be b because shes fighting herself not the outside world.
Answer: you might need to edit the question and add a photo if you can please
Explanation:
In grammar, an interjection is a word used to display emotions, such as surprise, glee, anger, etc. In this case the word "Yummy" is being used to display eagerness to enjoy the dinner that smells so unbelievably good.
Option A, "Yummy", is your correct answer choice.
Hope that helped! =)
I'm pretty sure its B. I am not 100% positive, but it sounds correct to me. Please let me know if I am correct or not and I really hope this helps.