Final answer:
John Holland's personality type theory classifies individuals who are risk-takers and take charge as Enterprising. Enterprising individuals often exhibit leadership qualities and are willing to take calculated risks.
Step-by-step explanation:
According to John Holland's personality type theory, people who are risk-takers and take charge are most appropriately classified as Enterprising. Enterprising individuals are often characterized by their energetic approach to leadership, their interest in persuasion, and their desire to impact others and attain organizational goals. They typically prefer roles where they can exercise influence, take risks, and potentially reap the rewards that come with successful ventures, aligning closely with the traits of entrepreneurs who carefully calculate risks before investing in projects.