It would be A. Vestigial Wing because of the vestigial genes that are carried by a fly, both have to be changed (a defect) to produce the bent wing shape.
The answer is surely D cuz I've done this question in a test before. Hoped I helped ;)
Answer:
Eusociality (from Greek εὖ eu "good" and social), the highest level of organization of sociality, is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations within a colony of adults, and a division of labor into reproductive and non.
Explanation:
The earliest member of the horse family was about the size of a medium sized dog. So 2. Terrier
