According to Taylor, what is the best way to achieve complete harmony between management and workers?

All of these

Taylor believed that the best way to achieve complete harmony between management and workers was through a combination of the following.
A mental revolution on the part of both management and workers: This meant that both managers and workers needed to change their attitudes and beliefs about each other. Managers needed to see workers as partners in the success of the company, and workers needed to see managers as leaders who were committed to their well-being.
Sharing the gains of the company with the workers: Taylor believed that workers should be rewarded for their contributions to the company's success. He proposed a system of profit-sharing, where workers would receive a portion of the company's profits.
Encouraging workers to work hard and embrace change for the good of the company: Taylor believed that workers should be motivated to work hard and be open to change. He proposed a number of ways to do this, such as setting clear goals and expectations, providing regular feedback, and offering opportunities for advancement.