The correct answer is D. Piecemeal wage distribution.
Mary Parker Follett was a political scientist and philosopher who is considered one of the founders of modern management theory. Her work focused on the dynamics of power and conflict in organizations, and she developed a number of concepts that are still widely used today, such as "integration" and "coactive power."
Consultative conflict is a process in which parties involved in a conflict come together to discuss the issue and try to find a solution that is acceptable to all parties. This is in contrast to a more adversarial approach, in which the parties try to win at the expense of the other party.
Theory of integration is a concept that Follett developed to explain how different parts of an organization can work together to achieve a common goal. She argued that integration is not about simply getting everyone to agree, but about creating a system in which different parts of the organization can work together effectively.
Coactive power is a type of power that is based on cooperation and collaboration. Follett argued that coactive power is the most effective type of power, because it allows people to work together to achieve common goals.
Piecemeal wage distribution is a system in which wages are set based on individual performance. This is in contrast to a more traditional system in which wages are set based on seniority or job title.
Follett did not discuss piecemeal wage distribution in her work, so it is not one of the elements of her theory.