Answer: Education and training
Explanation: Human capital is a set of knowledge, experience, skills, work habits, social and personal attributes, creativity embedded in the ability to perform any work that brings economic value. Based on all of these above mentioned values that an individual or society has, human capital represents the value of such an individual or society with all the aforementioned knowledge, skills and other mentioned values. Human capital can certainly be improved by education, learning and training to gain experience and skills.