Community, as the basic unit of social life, refers to a regional living community composed of a certain number of residents, with internal interactions and cultural sustaining power. The region, population, organizational structure, and culture are the basic elements of community composition. According to the above definitions, Which of the following belong to the community:. ['All patients in a hospital inpatient department.', 'An industry with multiple local offices breaks.', 'All rural residents living in a natural village.', 'A sub-district office in charge of residential affairs.']