Marianne and her children live in a neighborhood where all the families share their resources when someone needs help. The neighbors also consider themselves to be an extended family. Sociologists use the term to describe these survival mechanisms.

Communal living            

Explanation:

Marianne and her children live in a neighborhood where all the families share their resources when someone needs help. The neighbors also consider themselves to be an extended family. Sociologists use the term communal living to describe these survival mechanisms.  In sociology, communal living is defined as a type of living whereby individuals who live in the same community have things in common, are willing to share their possessions, resources, incomes among  themselves and  willing to offer help to any member of the community in need. The problem of an individual in the community becomes the problem of all.

the answer is either c or d i think its d

radiant energy is a form of kinetic energy only.(a)