Answer:
5 is the correct answer of these questions
Threateningly
We can tell that because the dogs are huddled together in fear, there's some sort of danger. Also the snarling suggests they are under caution or going on defense from some danger; they feel threatened.
Which novel? Tell me so I can edit my answer and help you
.
B) Gleefully.
Jubilantly is a positive emotion, extreme happiness and excitement. Gleefully is also an accurate description of that. Thus, gleefully is the best answer.
Hope this helps!