Canada is considered this because different cultural groups keep their own identity, beliefs, and traditions.

A. rural

B. a ecumene

C. region

D. urban

E. plural society

E. plural society

The correct answer is E. plural society.

To understand why Canada is considered a plural society, it is important to consider the characteristics mentioned in the question: different cultural groups maintaining their own identity, beliefs, and traditions.

A plural society is a society that consists of multiple cultural or ethnic groups living together while retaining their distinct identities. In Canada, this characteristic is reflected in its multiculturalism policy, which recognizes and supports the diverse cultural heritage of its population.

To arrive at this answer, one needs to be familiar with the definition of a plural society and have a general understanding of Canada's multiculturalism policy and the coexistence of various cultural groups within the country.