Because almost 97 percent of the people living in poland are of polish ethnic descent, poland is a(n) society. a. genetically diverse b. ethnically homogeneous c. genetically endangered d. ethnically heterogeneous

Polish society is ethnically the most homogenous in Europe, and has the lowest birth rate in this continent.

This is partly due to the fact that during the years of the World War II the foreign ethnic groups living in Poland (especially Jews and other ethnic groups) were in the Nazi Holocaust and others emigrated during and after the war with the changes of Poland's borders.  

Therefore, the majority of the population is Polish and the correct option is B.