Final answer:
The correct term for someone who sells the final results of their work, yet operates independently without their methods being subject to another's control, is an independent contractor. They differ from employees who work under direct supervision, and their work autonomy contrasts with owners/entrepreneurs in a private company.
Step-by-step explanation:
The person who acts for another, selling the final results of their work and whose methods are not controlled by others, is known as an independent contractor. Unlike employees, who perform tasks under the supervision of their employer, independent contractors operate independently and are typically responsible for their own business operations.
For example, a freelance graphic designer hired to create a logo for a company would be an independent contractor. They would use their own methods to deliver the final design, and while the company has a say in the end product, they do not direct how the designer produces the work. This is different from an employee who would perform work according to the employer's instructions and within their business structure.
A private company, which might be a sole proprietorship, partnership, or corporation without publicly issued stock, contrasts with these arrangements. Owners in these entities, like entrepreneurs, take an active role in decision-making and risk a lot in their ventures, which can differ significantly from an independent contractor's responsibilities.