To increase human capital, governments can provide

A cash payments to poor families
B scholarships
C low-interest student loans
D all of the above

B- A scholarship

Explanation:

Well think about it, the human capital describes employees' knowledge, skill sets and motivation that provide economic value to a firm... Human capital is not static and can be improved through education. A firm can improve its employees' human capital through continuing education and on-site education.

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.