Which of the following best describes Scandinavian legal realism?

Scandinavian legal realism, founded by Axel Hägerström of Uppsala and carried on by Vilhelm Lundstedt, Karl Olivecrona and Alf Ross, sought to remove metaphysics from legal thinking. Hägerström held that terms such as 'right' and 'duty' cannot be scientifically verified, and he treated legal knowledge as an empirical inquiry into legal rules and human behaviour. The school therefore does not treat law as moral principles found by reason, Olivecrona replaced the idea of a sovereign's command with that of independent imperatives, and the spirit of a people is the idea of the historical school.