Classification systems are based on

• A. Social meanings given to biological traits
• B. Biology alone defines race
• C. Genetic testing determines race
• D. Climate adaptation determines race

Answer: (A)

Classification systems reflect how society assigns meaning to physical differences rather than basing categories on biology alone. While traits like skin color or hair texture are real variations, the labels and boundaries we use to group people come from social traditions, power structures, and cultural context, and they can change across time and place. Genetic research shows there is more variation within so-called racial groups than between them, and there isn’t a clean, universal set of biological divisions that maps onto social categories. Climate or environmental adaptation plays a role in human diversity, but that doesn’t create fixed race categories. So, the way we classify people into race is rooted in social meanings attached to biological traits.