Answer:
A. Fighting for protection.
Step-by-step explanation:
B. Would be false because most behaviors are learnt or picked up after an individual animal has been born. It experiences things in its surroundings that will alter its behavior accordingly
C. Hunting packs could not be an option because that is a feature that animals are introduced to at a young age. They are t born with the knowledge of how to hunt with others in unison it is something it will have to learn. For example, if a pup were to be born in isolation it may not know how to function in a pack when hunting.
D. Would could not be an answer choice because all animals are born with the knowledge to sleep. No matter what genes it received, sleep is something all animals undergo.
A. Fighting for protection could be the only answer that fits because it is a behavior that genes can carry. For an example, if an animal were to have parents with extremely aggressive behavior and has a good stamina and experience with fighting, the pup/baby animal will have a good sense of fighting.
Hope this helps! :D