Which statement describes investing in human capital to increase productivity

Since there are no choices listed, here is an information about human capital:

capital maybe describe as human and physical. human capital--ideas or intellectual property, which means--workers and employees who work, manage, supervise produce, and of course, process production. physical capital on the other hand are the tools, equipment and all machineries involved.
investing in peoples' human capital means increasing labor productivity growth. if labor productivity is increased, eventually, productivity will also grow. human capital always affects quality and productivity.

They had more africans americans than any other state