Races
A) are characterized by rather fixed, clear-cut differences.
B) involve physical characteristics that never change over time.
C) are groups whose physical traits make it a relatively easy task to determine where one racial population ends and another racial population begins.
D) are groups that are not easily identified by cut-and-dry classifications.

Question

Quizplus · Accepted Answer

Races are not easily identified by clear-cut classifications because the concept of race is socially constructed and varies across different cultures and contexts. Physical traits often overlap among populations, making it difficult to draw distinct lines between racial groups.