In a society marked by organic solidarity,

A) individuals play a great variety of different roles, and unity is based on role differentiation.
B) the roles people play are very similar.
C) individuals share the same values and hold the same things sacred.
D) there is a complete lack of collective consciousness.

Organic solidarity is a type of social cohesion that arises out of the interdependence of different individuals in a society. It is characterized by a high degree of specialization and division of labor, which means that individuals play a great variety of different roles. Unity in such a society is based on role differentiation rather than shared values or beliefs. Thus, option A is the best choice. Option B is incorrect because organic solidarity is marked by diversity rather than similarity of roles played. Option C is incorrect because organic solidarity is not based on shared values, and option D is incorrect because collective consciousness is an important feature of organic solidarity.