Agroup member can attain social dominance by
a. inheriting it.
b. establishing its own group.
c. setting up its own territory.
d. engaging in social competition.

Social dominance is the social status characterized with dominance. The dominance is a characteristic of highly social animals, such as humans. Individuals of the same species compete with one another for food, mates, territory, or any other resource, including money. They establish social relationship with each other and an individual can attain social dominance by engaging in social competition. (D). The outcome of the competitions is: the dominant individual gets what he wants and the subordinate doesn't.

The awnser is b i believe