【单选题】

Which of the following statement about the modern society is TRUE according to the passage
A．There can never be a unanimous consensus concerning the identity of individuals or groups in a modern society.

B．A modern society is characterized by disorder, as there is no common morality and consensus.
C．In a modern society people obey rules mostly on the basis of their deep moral conviction.
D．A modern society needs no moral solidarity when it is threatened by grave internal or external perils.