Biology Forums - Study Force

According to the text, a family is
a. a social group having specified roles and statuses with ties of blood, marriage, or adoption that usually shares a common residence and cooperates economically.
b. a continuing relationship of love and care, and an assumption of responsibility for some other person.
c. husbands, wives, and children who all live under one roof.
d. a unit made up of any number of persons who live or have lived in relationship with one another over time in a common living space and who are usually, but not always, united by marriage and kinship.

d