Correct Answer: The geographical movement of workers from one region to another

Solution : The correct answer is (b) The geographical movement of workers from one region to another.

Human capital mobility refers to the movement of individuals, particularly workers, from one location to another in search of better employment opportunities or to utilize their skills and knowledge. This movement can involve individuals relocating to different regions or countries where their skills are in demand, contributing to the transfer of human capital and economic growth in those areas.