Final answer:
The social construction of race is the belief that race is not a scientific fact, but a social construct. Race is not biologically identifiable, and previous racial categories were arbitrarily assigned and used to justify racism.
Step-by-step explanation:
The social construction of race is the belief that race is not a scientific fact, but a social construct. It is a way of understanding racial categories that rejects biological explanations and emphasizes that race is not biologically identifiable. Instead, racial categories are arbitrarily assigned and used to justify racist practices. This school of thought is supported by social science organizations and research.