scientists have created dogs that are twice as strong as they would be naturally, through genetic engineering of the myostatin protein. the myostatin protein inhibits muscle growth, deleting this gene allowed the dogs to grow more muscular. the process used on the dog embryos could help prevent some human genetic disorders that affect the muscles of humans, like muscular dystrophy (a degenerative muscle disorder) based on their success with the two dogs, scientists stated it was possible for humans to be similarly genetically modified

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.

According to edgenuity, the answer is c.