There is no passage and answer choices, so it is impossible to answer this question. I apologise.
Answer:
The answer for this question is A) They are overwhelmed, and then they are cautious.
Explanation:
This is because they have suffered an attack and they could not even see where it came from. Plus, they have attacked each other as a result of he surprise attack that they chose to flee and say that the attacker is evil because they could not see it and they could not explain the phenomenom. That is why they are overwhelmed and as result of that they prefer to be cautious.
D. play critical roles in natural food webs
Vindictiveness is one of heroes characteristics if im wrong it might be courage question or good looks