Which of the following seems to make people, in general, more likely to define a group as a family?

A) the size of the group in question
B) the presence of children
C) the ages of group members
D) the socioeconomic class of the people involved

The presence of children tends to create a familial atmosphere within a group. This is because children typically require more care and attention, which can bring people together in a way that feels like a family unit. Size and ages may play a role, but they are not as strong of indicators as the presence of children. The socioeconomic class of the people involved has little to no effect on whether or not a group is defined as a family.