What type of animals live in a multigenerational family group in which sterile workers carry out all tasks essential to the group's welfare, while other members of the group produce offspring?

A) selfish herd
B) eusocial animals
C) dominance hierarchies
D) social animals
E) monogamous animals

The description matches eusocial animals, which live in multigenerational family groups with sterile workers carrying out all essential tasks and other members producing offspring. Selfish herd refers to a group of animals that stick together for individual protection, not for the benefit of the group as a whole, while dominance hierarchies refer to the ranking of individuals within a group based on power and status. Social animals generally refer to any species that lives in groups, while monogamous animals mate with only one partner for life.