Race and Ethnicity in Sports Practice Test

Continuous variation in human traits means there are no natural, sharp boundaries separating groups. When races are identified using such traits, you can always set new cutoffs or combine different traits to create additional categories. Because the spectrum is open-ended, there isn’t a finite, fixed number of races; the number can be extended or altered depending on where lines are drawn. This highlights how race is a social construct built from how we define categories, not a fixed biological tally.